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Primes HP-MSM-HB Original Instructions Manual

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Original Instructions
HighPower-MSM-HighBrilliance
HP-MSM-HB, HP-MSM-HB 20 kW
LaserDiagnosticsSoftware LDS 2.98
Revision 00 EN - 01/2021

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Summary of Contents for Primes HP-MSM-HB

  • Page 1 Original Instructions HighPower-MSM-HighBrilliance HP-MSM-HB, HP-MSM-HB 20 kW LaserDiagnosticsSoftware LDS 2.98 Revision 00 EN - 01/2021...
  • Page 3 HP-MSM-HB IMPORTANT! READ CAREFULLY BEFORE USE. KEEP FOR FUTURE USE. Revision 00 EN - 01/2021...

  • Page 4: Table Of Contents

    Device Assembly ........................13 Lever to adjust the magnification .....................14 Measuring principle .........................15 Measurement Range of the HP-MSM-HB ................16 4.6.1 Measurement Range of the HP-MSM-HB 10 kW ............16 4.6.2 Measurement Range of the HP-MSM-HB 20 kW ............17 Magnetic spring ........................17 Short overview installation...
  • Page 5 Accessories Transport or Storage 17.1 Installing the transportation clamp ...................73 17.2 Draining the cooling circuit of the HP-MSM-HB ...............74 17.3 Sealing the cooling circuit of the HP-MSM-HB ................74 17.4 Draining the cooling circuit of the PowerLossMonitor ..............75 17.5 Sealing the aperture of the HB objective ..................75 17.6 Packing the device ........................76...
  • Page 6 21.1 Dimensions of the HP-MSM-HB ....................79 21.2 Dimensions of the HP-MSM-HB with fibre bridge ..............81 21.3 Dimensions of the HP-MSM-HB 20 kW ...................84 21.4 Dimensions of the HP-MSM-HB 20 kW with fibre bridge ............86 Appendix A: 22.1 Power measurement with the PLM on the HP-MSM-HB ............88 22.2 Measuring pulsed irradiation ....................89...
  • Page 7 HP-MSM-HB 24.3.7 Power measurement (menu Measurement > Power Measurement) .....115 24.3.8 Single (menu Measurement > Single) ..............115 24.3.9 Caustic measurement (menu Measurement > Caustic) .........119 24.3.10 Start adjust mode (menu Measurement > Start Adjust mode) ......120 24.3.11 Option (advanced user only) (menu Measurement > Option) .........121 24.4 Presentation ..........................123...
  • Page 8 HP-MSM-HB PRIMES - The Company PRIMES manufactures measuring devices used to analyze laser beams. These devices are employed for the diagnostics of high-power lasers ranging from CO lasers and solid-state lasers to diode lasers. A wave- length range from infrared through to near UV is covered, offering a wide variety of measuring devices to determine the following beam parameters: •...

  • Page 9: Basic Safety Instructions

    In addition, there is an increased risk to health and life. Only use the device in such a way that there is no risk of injury. If you still have questions after reading this operating manual, please contact PRIMES or your supplier for your own safety.
  • Page 10 HP-MSM-HB Necessary safety measures due to magnetic spring with strong permanent magnet The device contains a magnetic spring made of neodymium magnets (NdFeB magnets) with a very strong permanent magnet. DANGER Danger to life for persons with pacemaker or implanted defibrillator Magnetic spring rotors consist mainly of neodymium magnets (NdFeB magnets).

  • Page 11: Symbol Explanations

    HP-MSM-HB Symbol explanations Warning messages The following symbols and signal words indicate possible residual risks: DANGER Means that death or serious physical injuries will occur if necessary safety precautions are not taken. WARNING Means that death or serious physical injuries may occur if necessary safety precautions are not taken.

  • Page 12: About This Operating Manual

    X Call for action About this operating manual This manual describes how to work with the HP-MSM-HB and operate it with the LaserDiagnosticsSoftware LDS 2.98 (referred to as “LDS” in the following). The measuring device is operated via PC or via the system control.

  • Page 13: Device Description

    HP-MSM-HB and • HP-MSM-HB 20 kW The HP-MSM-HB is designed for a maximum beam power of 10 kW, the HP-MSM-HB 20 kW for a maxi- mum of 20 kW. The maximum travel distance z is 120 mm for the 10 kW model and 40 mm for the 20 kW model.

  • Page 14: Lever To Adjust The Magnification

    The alignment objective simplifies the beam search, since it reduces the size of the image and the required positioning accuracy of the HP-MSM-HB is reduced by the reduction. The alignment objective can also be inserted into the beam path on the image side by moving both levers to the lower position.

  • Page 15: Measuring Principle

    HP-MSM-HB Measuring principle There are several beam splitters integrated in the measuring objective so that 99.9 % of the laser power is guided to appropriately dimensioned absorbers via the beam splitter. The laser beam is attenuated by further optical elements in the device until it can be guided to a CCD sensor.

  • Page 16: Measurement Range Of The Hp-Msm-Hb

    HP-MSM-HB Measurement Range of the HP-MSM-HB 4.6.1 Measurement Range of the HP-MSM-HB 10 kW Tab. 13.2 shows the correlation between power, diffraction index M² and the focus radius. Tab. 4.1: Power in kW as a function of the diffraction index M² and the focus radius...

  • Page 17: Measurement Range Of The Hp-Msm-Hb 20 Kw

    HP-MSM-HB 4.6.2 Measurement Range of the HP-MSM-HB 20 kW Fig. 4.4: Maximum power as a function of the laser divergence angle Magnetic spring With the HighBrilliance measuring objective, a magnetic spring is mounted, which counteracts to the weight of the measuring objective and thus relieves the traversing motors of the z-axis. Please note the warnings in this instructions when handling the magnetic spring.

  • Page 18: Short Overview Installation

    HP-MSM-HB Short overview installation This short overview informs you in advance about necessary protective measures, media necessary for opera- tion and required connecting elements. Taking safety precautions Chapter 1 on page 9 DANGER Danger to life for persons with pacemaker or implanted defibrillator Magnetic spring rotors consist mainly of neodymium magnets (NdFeB magnets).

  • Page 19: Transport

    X Handle the measuring device carefully when transporting or installing it. X To avoid contamination, close the measuring objective with the cover provided. X Only transport the device in the original PRIMES transport box (option). NOTICE Damaging/destroying the device The device must only be transported with a mounted lock..

  • Page 20: Installation

    HP-MSM-HB Installation Conditions at the installation site • The device must not be operated in a condensing atmosphere. • The ambient air must be free of organic gases. • Protect the device from splashes of water and dust. • Operate the device in closed rooms only.

  • Page 21: Manually Aligning The Hp-Msm-Hb

    (see chapter 21, „Dimensions“, on page 79). The device must be set up so that it is stable and fastened with screws (see chapter 7.3 on page 21). The HP-MSM-HB is designed to operate in a horizontal position with a beam incidence from above. NOTICE...

  • Page 22: Mounting The Cyclone

    In order to be able to align the HP-MSM-HB beneath the laser, an associated alignment tool is provided. By means of this alignment tool and a pilot laser beam, you can position the device with the necessary accu- racy.

  • Page 23: Positioning The Pilot Laser Beam Above The Cyclone

    The magnetically held alignment tool can fall down during shipping. Dirt may enter the objective. Therefore, the objective of the HP-MSM-HB is closed with a black transport lock. Before removing the transport lock, the area around the aperture must be cleaned with clean compressed air and the purge air must be connected to the HP-MSM-HB.
  • Page 24 Typically, the misalignment angle between the beam and the instrument axis should not exceed a divergence of 10 mrad (0.5°). X If the laser beam does not hit the bore vertically, you can align the HP-MSM-HB with the 6 screws in the threaded holes.

  • Page 25: Mounting The Fibre Bridge (Option)

    HP-MSM-HB Mounting the Fibre Bridge (option) For mounting fiber lasers a fibre bridge with fiber holders can be mounted. NOTICE Damaging/destroying the device In the upper z-axis position the cyclone can collide with the fiber optic holder and damage it X Dismount the cyclone before the startup! 4 Screws a.f.
  • Page 26 HP-MSM-HB Align the plates with reference to the tapped bores (picture B). Tapped Bores Dowel Pin 3. Put the fiber bridge on the distance plates. Fiber Bridge 4. Fasten the fiber bridge by means of two screws on both sides M5 x 10 mm. Please note that longer screws (>10 mm) can block the Z-axis...

  • Page 27: Cooling Water And Compressed Air Connections

    Cooling water and compressed air connections For the operation of the HP-MSM-HB both a cooling water and a compressed air supply is required. The device is equipped with a HighBrilliance measuring objective, which has to be cooled with water and flushed with compressed air.

  • Page 28: Water Quality

    The connections at the HP-MSM-HB are intended for PE-hoses with a diameter of 12 mm (respectively 16 mm at HP-MSM-HB 20 kW). Connect the cooling circuit (inlet and return flow) to the water supply and check if the hose connections are tight.

  • Page 29: Water Pressure

    HP-MSM-HB 8.1.2 Water pressure For a reliable operation a water flow rate of • 7 l/min to 8 l/min (at 10 kW) • 14 l/min to 16 l/min (at 20 kW) is required. Normally, 2 bar primary pressure at the entrance of the absorber are sufficient in case of an un- pressurized outflow.

  • Page 30: Water Connections And Water Flow Rate

    HP-MSM-HB 8.1.4 Water connections and water flow rate Connection diameter Recommended flow rate Minimum flow rate PE hoses 12 mm 7-8 l/min (ca. 1 l/(min · kW) not lower than 5 l/min PE hoses 16 mm 14-16 l/min not lower than 10 l/min Tab. 8.2: Water connections and water flow rate Remove the sealing plugs of the water connections 1.

  • Page 31: Electrical Connection

    Electrical connection Please ensure that all electrical connections have been established and switch the device on before starting the LaserDiagnosticsSoftware LDS. Connections Safety interlock On/off Switch Connection RS485 PRIMES bus Ethernet Input Output D-Sub socket 9 pole external trigger internal trigger...

  • Page 32: Pin Assignment

    HP-MSM-HB Pin assignment 9.2.1 Power supply D-Sub socket, 9-pin (view: connector side) Function RS485 (+) +24 V Trigger RS485 (+) Not assigned RS485 (–) +24 V Trigger RS485 (–) Tab. 9.1: D-Sub socket RS485 9.2.2 Inlet external trigger BNC connector (view: connector side)

  • Page 33: External Safety Circuit (Interlock)

    9.2.5 External Safety Circuit (Interlock) An external safety circuit (interlock) is integrated in the HP-MSM-HB, which you must connect to the safety circuit of the laser. The safety circuit protects the measuring device from damage by switching off the laser beam in the event of a fault condition within the device.
  • Page 34 HP-MSM-HB HP-MSM-HB Adapter PRIMES Power Supply Crossover cable Patch cable Ethernet Ethernet Fig. 9.5: Connection via Ethernet with a PC or a local network Revision 00 EN - 01/2021...

  • Page 35: Status Leds

    Power Green The power supply is switched on Measuring Yellow A measurement is running Tab. 10.1: Description of the status LEDs on the HP-MSM-HB Power Supply Measuring Mode Fig. 10.1: Status LEDs at the HP-MSM-HB Revision 00 EN - 01/2021...

  • Page 36: Installation And Configuration Of The Laserdiagnosticssoftware Lds

    HP-MSM-HB Installation and configuration of the LaserDiagnosticsSoftware LDS In order to operate the measuring device, the PRIMES LaserDiagnosticsSoftware LDS has to be installed on the computer. The program can be found on the enclosed medium. You will find the latest version on the PRIMES website at: https://www.primes.de/en/support/downloads/ software.html.

  • Page 37: Ethernet Configuration

    11.3.2 on page 37). • If you want to connect the HP-MSM-HB to the network using the fixed IP address, first turn on the HP-MSM-HB and then connect the network cable to the HP-MSM-HB. Then enter the fixed IP address in the menu Communication > Free Communication (see chapter 11.3.2 on page 38).

  • Page 38: Establishing A Connection To Pc)

    7. Click on the Safe Config button (the configuration is saved and does not need to be re-entered when starting the LaserDiagnosticsSoftware LDS again). 8. Click on the Find Primes Devices button. • If a device is found, the dialog windows for the measurement settings are opened.

  • Page 39: Changing The Standard Ip Address Of The Device

    11.3.3 Changing the standard IP address of the device If the fixed IP address of the HP-MSM-HB conflicts with another device bearing the same IP address on the network, the fixed IP address of the HP-MSM-HB can be changed. NOTICE...

  • Page 40: Retrieve Ip Address Automatically With Dhcp

    HP-MSM-HB se0331 086 Confirmation Adr: 0331 Wert:086 Fig. 11.4: Changing the IP address in the dialogue window Free Communication 11.3.4 Retrieve IP address automatically with DHCP DHCP (Dynamic Host Configuration Protocol) enables the automatic integration of a device into an existing network without its manual configuration.
  • Page 41 HP-MSM-HB 192 . 168 . 116 . 85 se0331 001 -- Connecting to Device ip 192.168.116.85 port 6001... --CONNECTED to 192.168.116.85.6001 <-se0331 001 - > Readback o.k. - > ReadingEEPROM into structure... - > Calculating structure CRC... - > Storing structure CRC to EEPROM...

  • Page 42: Description Of The Laserdiagnosticssoftware Lds

    HP-MSM-HB Description of the LaserDiagnosticsSoftware LDS The LaserDiagnosticsSoftware LDS is the control centre for all PRIMES measuring devices which measures the beam distribution as well as focus geometries by means of which the beam propagation characteristics can be determined. The LaserDiagnosticsSoftware LDS includes all functions necessary for the control of measurements and displays the measuring results graphically.
  • Page 43 HP-MSM-HB The graphical user interface mainly consists of the menu as well as the toolbar by means of which different dialogue or display windows can be called up. Menu Bar Tool Bar Dialogue Window Fig. 12.3: The main elements of the user interface It is possible to open several measuring and dialogue windows simultaneously.

  • Page 44: The Menu Bar

    HP-MSM-HB 12.1.1 The menu bar In the menu bar, all main and sub menus offered by the program can be opened. Fig. 12.5: Menu bar Revision 00 EN - 01/2021...

  • Page 45: The Toolbar

    HP-MSM-HB 12.1.2 The toolbar By clicking the symbols in the toolbar, the following program menus can be opened. File administration Notation File selection Plane selection     Fig. 12.6: Symbols in the toolbar 1. Create a new data record 2.

  • Page 46: Menu Overview

    - Reference value for the laser power - Focal length - Wavelength - Comment - Device offset (Not relevant for HP-MSM-HB) Sensor parameters The following device parameters can be e.g. set here: - The mechanical locked area of the z-axis...
  • Page 47 Communication Rescan bus The system searches the bus for the different device addresses. This is necessary whenever the device configuration at the PRIMES bus was changed after starting the software. Free Communication Display of the communication on the PRIMES bus...
  • Page 48 HP-MSM-HB Script Editor Opens the script generator, a tool, by means of which complex measuring procedures are controlled automatically (with a script language developed by PRIMES). List Shows a list of the opened windows Python Opens the script generator in order to control complex measuring procedures automati-...

  • Page 49: Measurement

    4. Wait until the measuring device has finished the referencing procedure (duration approx. 30 seconds). 5. Start the LaserDiagnosticsSoftware on your computer. 6. Change the z-position to 60 mm (center of the measuring range; 20 mm for HP-MSM-HB 20 kW)). 7. Open the compressed air supply.

  • Page 50: Hp-Msm-Hb With Fiber Bridge

    Danger of damage due to a collision of the objective with the fiber adapter. The movement range of the HP-MSM-HB in z-direction is limited by the fiber adapter. The maximum movement range depends on the type of fiber adapter that is used.

  • Page 51: Prepare Measurement

    HP-MSM-HB 13.4 Prepare measurement The following check lists should help you to realize the most important conditions for a measurement and to carry out all necessary settings of the LaserDiagnosticsSoftware LDS. 13.4.1 Check list measurement settings The device is stable and fixed.

  • Page 52: Flowchart Of A Measurement

    HP-MSM-HB 13.5 Flowchart of a measurement 13.5.1 Prepare measurement Search caustic Preparation settings Beam found? Positioning z-axis: HP-MSM-HB = 60 mm HP-MSM-HB20kW= 20mm Check alignment again Select Magnification Check Increase laser Low x 0.3 saturation power on the device Laser beam is...

  • Page 53: Perform Caustic Measurement

    HP-MSM-HB 13.5.3 Perform caustic measurement First caustic measure- ment Enter caustic limit values Start measuring Set number of mea- program surement planes to 21 Increase Open laser power new file Carry out asymmetric Start measurement Start caustic measurement − 3 z to + 1 z...

  • Page 54: Perform Measurement Settings In The Laserdiagnosticssoftware Lds

    HP-MSM-HB 13.6 Perform measurement settings in the LaserDiagnosticsSoftware LDS The following explanations of the configuration options should help you to make the right settings for the respective task. The following chapters highlight important configuration options in color: Color Meaning This setting must always be set as shown.

  • Page 55: Measuring Environment (Menu Measurement > Environment)

    HP-MSM-HB Manual z-axis With this function you can deactivate the z-axes of the measuring system. This is useful if you want to use external movement axes. In this case you can manually assign a z-value to every measurement plane in the dialogue window Single measurement.

  • Page 56: Measurement Settings (Menu Measurement > Single)

    HP-MSM-HB 13.6.3 Measurement settings (menu Measurement > Single) Fig. 13.4: Dialogue window Measurement settings Controlling measuring modes (individual measurement, monitor, and video mode) There is a total of three different measuring modes that can be selected here. In the Individual Measure- ment and Monitor measuring mode, all necessary compensations (smear effect, diffusion) and exposure time adjustments are performed every time a new measurement is carried out.

  • Page 57: Caustic Settings (Menu Measurement > Caustic)

    HP-MSM-HB 13.6.4 Caustic settings (menu Measurement > Caustic) Fig. 13.5: Dialogue window Caustic settings Parameters (start number of the plane) Under Start, the start number at which the measurement is initiated can be entered for the plane. By default, the start number is generally set to zero and should only be changed when you are measuring in an existing document and don’t want the existing measurement data to be overwritten.

  • Page 58: Ccd Settings (Menu Measurement > Ccd Settings)

    HP-MSM-HB surement duration considerably, but does require that the location and parameters of the laser beam change only minimally. Beam search This selection field specifies which plane the caustic measurement should be started in. If the optional Beam Find function is activated in the Options dialog window, that is also the plane in which this function will be performed.
  • Page 59 HP-MSM-HB CCD operating modes Three different modes can be set here. If the Raw Data setting is activated, the measuring system will return the uncompensated data of the CCD when a measurement is requested. Especially with NIR irradiation, these can be riddled with measuring errors such as “smear effect” readout noise. Even the numeric beam data generated from this data will be affected by this.

  • Page 60: Option (Advanced User Only) (Menu Measurement > Option)

    HP-MSM-HB Transfer signals Meaning Wait for trigger Is high when the CCD is at the holding point in line a and is waiting for the trigger signal. Is low as soon as the trigger is activated and the delay begins. Only a short high pulse occurs in untriggered operation.

  • Page 61: Ccd Info (Menu Measurement > Ccd Info)

    HP-MSM-HB If you turn the Beam Find function off and have the measuring measure the beam search plane system be- fore each caustic measurement, you can save about 20 sec of measuring time per caustic measurement. Summary: This function should be activated by default and only deactivated by experienced users. Turning off this function can shorten the time for caustic measurements by about 15 %.

  • Page 62: Single Measurement (Menu Measurement > Single)

    It allows you to do a beam search manually or using the Scan function. When a Scan is triggered, the HP-MSM-HB automatically tests the measuring range. When a point of maxi- mum intensity is detected, the HP-MSM-HB automatically zooms to this point and adjusts the measuring window size.
  • Page 63 HP-MSM-HB The video mode only functions when using Ethernet communications. The HP-MSM-HB provides 4 frames per second in video mode. Unlike the monitoring operation, only raw data is transmitted in video mode. If the detector is over driven during a measurement (the appearance of red in the representation and/or an A/D-Converter value of 4 095 in a clear section indicates signal saturation), you should reduce the amplifi-...

  • Page 64: Caustic Measurement (Menu Measurement > Caustic)

    Prepare a caustic measurement When positioning the HP-MSM-HB, the beam focus should be in the middle of the z-axis working area. Depending on device model, this is approximately 60 mm above the null position for a standard device and 20 mm for a HP-MSM-HB 20 kW of the integrated z-axis.
  • Page 65 HP-MSM-HB During automatic caustic measurement, the minimum and maximum z-position is selected together with the number of measuring planes. The measurement cycle begins with an automatic beam search in the specified starting plane. The beam search only occurs within the area of the starting plane’s measurement window.
  • Page 66 HP-MSM-HB To conduct a manual caustic measurement, follow these steps: 1. Delete the old data in the Edit > Clear all planes dialog window or create a new document File > New. 2. In the Caustic settings dialog window, click on Manually adjusted (menu Measurement > Caustic).

  • Page 67: Troubleshooting

    When there is no measurement signal detected, except for noise which is typically 270 - 300 counts at the HP-MSM-HB (the current number of counts can be found under the menu item Display > Variable Contour Lines, recheck the device position. Besides wrong positioning a too high attenuation can cause the same problem.

  • Page 68: Demounting The Measuring Objective

    HP-MSM-HB NOTICE Damaging/destroying the device Contamination and fingerprints on the protective window / mirror can lead to damage or shattering or splintering of the protective window during measuring operation. X Only replace the protective window in a dust-free environment. X Do not touch the protective window.

  • Page 69: Changing The Aperture At The Beam Entrance

    HP-MSM-HB The objective is fastened at the device by S1, S2 means of three screws. The two screws of the transport lock S1 and S2 (M3x16, AF 2.5 mm) are required for the fastening of the objective on the device surface.

  • Page 70: Exchanging The Protective Window In Front Of The Power Output Aperture

    HP-MSM-HB 15.3 Exchanging the Protective Window in front of the Power Output Aperture • Observe the warning messages above • Keep the protective window free from contaminations. • Do not touch the plane surface of the protective window when putting it in! The protective window protects the optical elements behind it from contaminations.

  • Page 71: Exchanging Beam Splitter

    HP-MSM-HB 15.4 Exchanging beam splitter Observe the warning messages at the beginning of this chapter. Components: 1. Cylinder pin ISO 2338 m6 4x12 2. Beam splitter 3. Labeling “Arrow” has to point downwards. 4. Optics tube 5. Coupling Ring 6. Drilling 1.

  • Page 72: Accessories

    HP-MSM-HB Accessories Revision 00 EN - 01/2021...

  • Page 73: Transport Or Storage

    X Do not use compressed air to drain the cooling circuit of the PowerLossMonitor. However, you are welcome to use compressed air to drain the HP-MSM-HB. X Even when the lines of the cooling circuit have been emptied, a small amount of residual water will remain in the device at all times.

  • Page 74: Draining The Cooling Circuit Of The Hp-Msm-Hb

    Draining the cooling circuit of the HP-MSM-HB The cooling circuit of the HP-MSM-HB must be completely drained. Storage or transport at a temperature that is close to or below freezing can lead to damages due to the formation of ice, if the cooling circuit is not completely empty.

  • Page 75: Draining The Cooling Circuit Of The Powerlossmonitor

    Sealing the aperture of the HB objective The magnetically held alignment tool may fall off during shipping. This could allow dirt to enter the objective. The objective of the HP-MSM-HB must therefore be sealed for shipping with the enclosed black transporta- tion lock.

  • Page 76: Packing The Device

    1. Pack the device completely in a plastic wrap to avoid contamination with particles from the case padding foam. 2. Place the packaged unit in the PRIMES transport case and close the cover with all casps. All accessories must be completely enclosed.

  • Page 77: Declaration Of Conformity

    HP-MSM-HB Declaration of conformity Revision 00 EN - 01/2021...

  • Page 78: Technical Data

    HP-MSM-HB Technical data HP-MSM-HB HP-MSM-HB 20 kW Characteristics Measurement Max. medium power Singlemode 5 kW 10 kW Multimode 10 kW 20 kW Beam Diameter 20 µm... 1000 µm Wavelength Range 1000 nm...1100 nm Admissible wavelength range of the laser 1025 nm- 1080 nm light ±...

  • Page 79: Dimensions

    HP-MSM-HB Dimensions 21.1 Dimensions of the HP-MSM-HB All dimensions in mm (general tolerance ISO 2768-v) Revision 00 EN - 01/2021...
  • Page 80 HP-MSM-HB Dimensions of the HP-MSM-HB (continued) View A All dimensions in mm (general tolerance ISO 2768-v) Revision 00 EN - 01/2021...

  • Page 81: Dimensions Of The Hp-Msm-Hb With Fibre Bridge

    HP-MSM-HB 21.2 Dimensions of the HP-MSM-HB with fibre bridge All dimensions in mm (general tolerance ISO 2768-v) Revision 00 EN - 01/2021...
  • Page 82 HP-MSM-HB Dimensions of the HP-MSM-HB with fibre bridge (continued) View A All dimensions in mm (general tolerance ISO 2768-v) Revision 00 EN - 01/2021...
  • Page 83 HP-MSM-HB Dimensions of the HP-MSM-HB with fibre bridge (continued) View B All dimensions in mm (general tolerance ISO 2768-v) Revision 00 EN - 01/2021...

  • Page 84: Dimensions Of The Hp-Msm-Hb 20 Kw

    HP-MSM-HB 21.3 Dimensions of the HP-MSM-HB 20 kW All dimensions in mm (general tolerance ISO 2768-v) Revision 00 EN - 01/2021...
  • Page 85 HP-MSM-HB Dimensions of the HP-MSM-HB 20 kW, continued) View C All dimensions in mm (general tolerance ISO 2768-v) Revision 00 EN - 01/2021...

  • Page 86: Dimensions Of The Hp-Msm-Hb 20 Kw With Fibre Bridge

    HP-MSM-HB 21.4 Dimensions of the HP-MSM-HB 20 kW with fibre bridge All dimensions in mm (general tolerance ISO 2768-v) Revision 00 EN - 01/2021...
  • Page 87 HP-MSM-HB Dimensions of the HP-MSM-HB 20 kW with fibre bridge (continued) View D All dimensions in mm (general tolerance ISO 2768-v) Revision 00 EN - 01/2021...

  • Page 88: Power Measurement With The Plm On The Hp-Msm-Hb

    Water connections For the HP-MSM-HB, the PLM is used to measure the power loss in the water-cooled absorber. To do this, connect the PLM into the water supply to the HP-MSM-HB: The cold water flows through the PLM and from there to the HP-MSM-HB.

  • Page 89: Measuring Pulsed Irradiation

    Measuring pulsed irradiation The CCD sensor of the HP-MSM-HB has a dynamic of 55 dB. An integration time control has been imple- mented in order to expand this. The integration time can be freely chosen within the range of 12 µs to 186 ms.
  • Page 90 The long timeout time (20 sec.) also helps to measure lasers with a pulse that is manually triggered. If this is the case, a measurement must first be taken. The HP-MSM-HB will move to the desired position and run through a certain routine internally. Once the HP-MSM-HB is ready for a trigger, notification of this will be displayed in the Free Communication dialog window.

  • Page 91: Measuring Configuration Selection

    HP-MSM-HB 22.2.1 Measuring configuration selection There are various measuring options to differentiate between: • Measuring a single plane or a complete caustic • Measuring a complete pulse or just a single section • Measuring with a fixed integration time or with integration time control •...
  • Page 92 HP-MSM-HB Pulse frequency Fig. 22.3: Percentage of change in the detected energy when exactly one pulse is left out, in correlation with the pulse frequency Tab. 22.1 on page 91 Shows the number of detected pulses during the maximum integration time (186 ms) and during an integration time of 1 ms for various pulse frequencies.
  • Page 93 1 - 4. Furthermore, as was mentioned in the initial consideration, the HP-MSM-HB is equipped with quite a few op- tions for triggering. Combined with integration time control and delay time control, it is possible to take good measurements even in Case 1.
  • Page 94 HP-MSM-HB These four cases can generally be sorted into two groups. Case 1 and 2 must be measured in the triggered measuring mode. Case 4, however, is best measured in untriggered measuring mode cw. Case 3 should be avoided altogether by choosing a suitable filter.

  • Page 95: Examples For Triggered Measuring Mode

    Initiate a measurement. You now have 20 sec. to set off a trigger. As a result of the delay value of 0.95 ms and the fixed integration time of 100 µs, the HP-MSM-HB detects the second laser pulse after setting off the trigger. Example 2:...

  • Page 96: Summary

    It is important to make sure that the integration time is never smaller than the pulse pauses. If this is the case, it will no longer be possible to perform an untriggered measurement properly with the HP-MSM-HB. So it sometimes makes sense to set the attenuation so that exactly one pulse is enough to expose the sen- sor at the focal point.

  • Page 97: Appendix B: Basis Of Laser Beam Diagnosis

    HP-MSM-HB Appendix B: Basis of laser beam diagnosis 23.1 Laser beam parameter Raw beam diameter d σ σ Divergence angle θ Focal length f θ Focus diameter d σ z-axis z-axis Fig. 23.1: Sketch for the definition of beam parameters...

  • Page 98: Rotationally Symmetric Beams

    HP-MSM-HB 23.1.1 Rotationally symmetric beams According to ISO 11145 as well as ISO 11146 three beam parameters are necessary for the characterization of a rotationally symmetric beam: • the z-position of the beam waist (focus) z • the diameter of the beam waist d σF...

  • Page 99: Non Rotationally Symmetric Beams

    HP-MSM-HB 23.1.2 Non rotationally symmetric beams In order to describe non rotationally symmetric beams, the following parameters are required: • the z-position of the beam waist (focus) z and z • the diameter of the beam waist d and d σ0x...

  • Page 100: Calculation Of Beam Data

    HP-MSM-HB 23.2 Calculation of beam data For the calculation of the beam data not only the algorithms for the 2. moment method are implemented as demanded by the ISO standard 11145 but also the 86 % method which is widely-spread within the industry.

  • Page 101: Determination Of The Beam Position

    HP-MSM-HB 23.2.2 Determination of the beam position The beam position is determined by means of the 1. moment method. This means the moment of inertia of the power density distribution (E(x, y, z)) is determined. (1.5) As mentioned at the beginning of the chapter, there are two possibilities how to determine the beam radius after the determination of the beam position.

  • Page 102: Radius Determination With The Method Of The 86 % Power Inclusion

    HP-MSM-HB 23.2.4 Radius determination with the method of the 86 % power inclusion The first step is the determination of the volume of the power density distribution. It is proportional to the total power. The addition of all power density values and their multiplication with the pixel dimensions result in the volume and therefore the total power.

  • Page 103: Further Radius Definitions (Option)

    6. Power inclusion method with a freely definable 2 power value 2. Moments Power inclusion Knife edge method Slit method Gaussfit method 1/e²-power density Fig. 23.5: Schematic illustration of the beam radius definitions that are offered optionally for the PRIMES LaserDiagnosticsSoftware LDS Revision 00 EN - 01/2021...

  • Page 104: Measurement Errors

    HP-MSM-HB 23.3 Measurement errors Regardless of the measuring principle, there are many sources of errors in determining beam radius. • Determination of the zero level • Finite size of the measurement window • Resolution in x and y directions •...

  • Page 105: Errors From Incorrect Measurement Window Size

    HP-MSM-HB 23.3.3 Errors from incorrect measurement window size The entire laser beam must be within the measurement window for correct normalization of the volume of the measured distribution. Since the intensity distribution, in principle, extends infinitely, a fraction of the beam power is always outside the measuring range.

  • Page 106: Appendix: Laserdiagnosticsoftware Lds

    HP-MSM-HB Appendix: LaserDIagnosticSoftware LDS This chapter describes the functions of all main menus and submenus of the menu bar. Fig. 24.1: Menu bar Revision 00 EN - 01/2021...

  • Page 107: File

    HP-MSM-HB 24.1 File This menu includes – among others – the administration of measurement and setting data. 24.1.1 New (menu File > New) By means of New a new file is created. 24.1.2 Open (menu File > Open) By means of Open a selected file is opened.

  • Page 108: Load Measurement Preferences (Menu File > Load Measurement Preferences)

    Load measurement preferences (menu File > Load measurement preferences) Stored settings can be resorted to with Load measurement preferences. The standardized extension for a setting file of the HP-MSM-HB is “.ptx”. 24.1.8 Save measurement preferences (menu File > Save measurement preferences) The current measurement settings are stored (.ptx-file).

  • Page 109: Edit

    HP-MSM-HB 24.2 Edit 24.2.1 Copy (menu Edit > Copy) By means of the copy function a direct export of graphics to other programs is possible. In this case the content of the current window is transmitted to the Windows clipboard.
  • Page 110 HP-MSM-HB Wave length The wave-length is the basis for a correct determination of the beam quality factor M². It is 1.064 μm for Nd:YAG laser. A wavelength can also be typed in numerically. While only the calibration points of the measuring objective can be configured in the CCD Setting dialog win- dow, the exact value of the laser’s wavelength can be entered in this window.

  • Page 111: Sensor Parameters (Menu Measurement > Sensor Parameter)

    By means of this option, you can select the device which is supposed to be operated. Depending on the number of devices connected, additional device numbers are assigned. Not relevant for HP-MSM-HB. Resolution Here you can enter the number of pixels in the measuring window, ranging from 32 x 32 to 256 x 256 pixels.

  • Page 112: Ccd Info (Menu Measurement > Ccd Info)

    HP-MSM-HB 24.3.4 CCD info (menu Measurement > CCD Info) The most important device data is shown in the menu Measurement > CCD Device Info. Here you can see the magnification information for the measuring objective and also check which beam path is turned on.

  • Page 113: Ccd Settings (Menu Measurement > Ccd Settings)

    HP-MSM-HB 24.3.5 CCD settings (menu Measurement > CCD Settings) Fig. 24.7: Dialogue window CCD Settings The wavelength, attenuation, and operating mode are all set in the CCD Settings dialog window. Trigger modes The appropriate settings must be configured here in keeping with the operating mode of the laser to be mea- sured.
  • Page 114 HP-MSM-HB starts receiving trigger signals (lower trigger level). The trigger level is then increased until the HP-MSM-HB stops receiving trigger signals (top trigger level). The final trigger level is determined by calculating the arithmetic mean of the two limit values. External trigger entry can be activated via the menu point Trigger Channel.

  • Page 115: Lqm Adjustment (Menu Measurement > Lqm Adjustment)

    HP-MSM-HB 24.3.6 LQM adjustment (menu Measurement > LQM Adjustment) Not relevant for HP-MSM-HB. 24.3.7 Power measurement (menu Measurement > Power Measurement) Not relevant for HP-MSM-HB. 24.3.8 Single (menu Measurement > Single) Fig. 24.9: Dialogue window Measurement settings Revision 00 EN - 01/2021...
  • Page 116 Find beam Starts an automatic beam search in the current measuring plane Scan Starts an automatic beam search with the HP-MSM-HB. The algorithm works at a fixed z-position and searches only within the range of the specified measuring window. Ampl.
  • Page 117 Scan command. Once a scan is initiated, the HP-MSM-HB will automatically sense the measuring area. If a point of maximum intensity can be identified, the HP-MSM-HB will automatically zoom in on this area and adjust the measuring window size accordingly.
  • Page 118 Start button. Selecting Monitor and pressing the Start button will initiate an ongoing, repeat- ing measurement with the current settings. The repeat rate depends on the spacial resolution and the type of communication between the PC and the HP-MSM-HB. Zoom function The zoom function allows for detailed magnification of the measuring area.

  • Page 119: Caustic Measurement (Menu Measurement > Caustic)

    HP-MSM-HB 24.3.9 Caustic measurement (menu Measurement > Caustic) The caustic measurement is a serial measurement where the z position is varied. The results are stored in different planes. A different z-position is assigned to every measuring plane. As the beam radius as well as the power density change in every z-position, the position as well as the size of the window and the signal strength can vary from plane to plane.

  • Page 120: Start Adjust Mode (Menu Measurement > Start Adjust Mode)

    The manual caustic measurement consists of a series of individual measurements at various z-positions, with the results being stored in their own planes. 24.3.10 Start adjust mode (menu Measurement > Start Adjust mode) Not relevant for HP-MSM-HB. Revision 00 EN - 01/2021...

  • Page 121: Option (Advanced User Only) (Menu Measurement > Option)

    HP-MSM-HB 24.3.11 Option (advanced user only) (menu Measurement > Option) Fig. 24.11: Dialog window Option Enable beam find process The Beam Find function must be used for caustic measurement. This involves an algorithm that separates the measuring signal from the measurement artifacts (e.g. noise) via an adjustable trigger threshold and adapts the size of the measuring window to this signal.
  • Page 122 HP-MSM-HB For TopHat and Gaussian beam shaped laser beams, the fill factor should range between 0.5 and 0.7. If the beam has diffraction rings, however, and if these are located completely within the measuring window, the optimal value for the fill factor can be between 0.5 and 0.6.

  • Page 123: Presentation

    HP-MSM-HB 24.4 Presentation This chapter describes the presentation, analysis and storage of measuring results. In order to carry out comparisons between different measurements, the program can manage several measuring data sets simultaneously. The opened data sets are shown in the toolbar. In order to open one presentation, the data which is to be examined is selected in the list of the data selection and afterwards the desired kind of presentation is chosen.

  • Page 124: False Colors (Menu Presentation > False Colors)

    HP-MSM-HB 24.4.1 False colors (menu Presentation > False colors) Here, a false color presentation of the measured power density distribution is generated. Fig. 24.13: Dialogue window False colors The used color scale is shown on the left. For a higher sensitivity, e.g. for the analysis of diffraction figures, it is possible to switch the used color scale in the menu Presentation >...

  • Page 125: False Colors (Filtered) (Menu Presentation > False Colors (Filtered))

    HP-MSM-HB 24.4.2 False colors (filtered) (menu Presentation > False colors (filtered)) The special function of the filter is called spline – function. It is characterized by the fact that the position of the maximum is maintained. The single pixels in the matrix are weighed by means of a 1-2-1 filter in order to reduce the noise.

  • Page 126: Isometry 3D (Menu Presentation > Isometry 3D)

    HP-MSM-HB 24.4.4 Isometry 3D (menu Presentation > Isometry 3D) This function generates three-dimensional displays of the power density distribution of a plane and all planes in false colors. The presentation window is divided. On the left the caustic, on the right the power density distribution in a plane is displayed.

  • Page 127: Review 86 % Or 2. Moment (Menu Presentation > Review (86%)/(2. Moment))

    HP-MSM-HB 24.4.5 Review 86 % or 2. moment (menu Presentation > Review (86%)/(2. moment)) For the radius definition there are two basic determination possibilities: • Determination of the beam radii according to the 86% - power definition, (see chapter 23.2.4 on page 102).

  • Page 128: Caustic (Menu Presentation > Caustic)

    HP-MSM-HB 24.4.6 Caustic (menu Presentation > Caustic) The results of the caustic measurement can be displayed by means of the menu item Presentation > Caustic. On the left Fig. 24.17 on page 128 shows the measured beam parameter either on the basis of the 86%-radii or the 2.
  • Page 129 HP-MSM-HB Z-position This value provides the position of the focus points in the z-position. As the compensation curve takes the measurement points into consideration, the calculated z-position is not necessarily located at the position, which has measured the smallest radius.
  • Page 130 The related curves are shown via the two check boxes radius x, y while the numerical values are provided by the result window. Raw beam (menu Presentation > Caustic > Raw Beam) Not relevant for HP-MSM-HB. Revision 00 EN - 01/2021...
  • Page 131 HP-MSM-HB Review (menu Presentation > Caustic > Review) This function checks whether the results and settings of the caustic measurement are within the reliable range. Not ok Borderline results (in the measuring planes 2, 4, 6, 7 and 8) Fig. 24.19: Result window Measurement Review Under “spread”...

  • Page 132: Raw Beam (Menu Presentation > Raw-Beam)

    24.4.7 Raw beam (menu Presentation > Raw-beam) Not relevant for HP-MSM-HB. 24.4.8 Symmetry check (menu Presentation > SymmetryCheck) This display menu checks the rotational symmetry of the power density distribution of a laser beam. It can, for instance in connection with the monitoring operation (Measurement >...
  • Page 133 HP-MSM-HB Fig. 24.21: Dialogue window Symmetry check in Cartesian coordinates of an elliptic beam The abscissa in Fig. 24.21 on page 133 shows the angle and the ordinate shows the beam radius with the intersection line at 86 % of the total power.

  • Page 134: Fixed Contour Lines (Menu Presentation > Fixed Contour Lines)

    HP-MSM-HB 24.4.9 Fixed contour lines (menu Presentation > Fixed Contour Lines) The contour lines are displayed with different power levels. Intersection lines are selected with: 86 %, 80 %, 60 %, 40 %, 20 % and 10 % of the total power. In this presentation it is also possible to measure distances by clicking the start and end points with the mouse.
  • Page 135 HP-MSM-HB Fig. 24.24: Dialogue window Variable contour lines In the range of the left hand lower corner the current intersection coordinates, the power densities, the radius generated by the intersection as well as the relative volume are displayed. The values are calculated basing on the correctly entered laser power.
  • Page 136 HP-MSM-HB One click on the CCD Info button will open a window with additional information on the device parameters such as trigger mode, trigger delay, integration time, magnification and focussing optic type. Fig. 24.25: Display window CCD Info Revision 00 EN - 01/2021...

  • Page 137: Graphical Review (Menu Presentation > Graphical Review)

    Display window Graphical review – Example for assessment of a time series - radius/time See chapter 24.3.9 on page 119, Section „Manual caustic measurement as time series (menu Measure- ment > Caustic > Manually adjusted)“. 24.4.12 Systemstate (menu Presentation > Systemstate) Not relevant for HP-MSM-HB. Revision 00 EN - 01/2021...

  • Page 138: Evaluation Parameter View (Menu Presentation > Evaluation Parameter View)

    Display window Evaluation Parameter View with opened parameter file The desired parameters and their limit values can be stipulated by means of the program PRIMES-EvalEditor and can then be saved in the evaluation parameter file (*.eval). The program is automatically installed when the LDS-setup is carried out.

  • Page 139: Evaluate Document (Menu Presentation > Evaluate Doc)

    HP-MSM-HB The evaluation parameter file can only be displayed if the file BeamControls.xsd is located in the same directory (C:\Program\Primes\LDS2.98\System)! 24.4.14 Evaluate document (menu Presentation > Evaluate doc) The evaluation function compares selectable beam parameters and their adjustable limit values with the results of a current or a saved measurement.
  • Page 140 HP-MSM-HB Evaluation Criteria: Only if all single evaluations are ok, the overall evaluation is displayed in green in the traffic light symbol. Fig. 24.30: Dialogue window Evaluate In case the warning or limit values are exceeded, this has an influence on the color display of the traffic light symbol.

  • Page 141: Color Tables (Menu Presentation > Color Tables)

    HP-MSM-HB 24.4.15 Color tables (menu Presentation > Color Tables) Different color charts are available. It is possible to switch back and forth between the color charts. Thus the assignment of A/D converter values and different color scales can be varied. This is important for the false color presentation.

  • Page 142: Position (Menu Presentation > Position)

    HP-MSM-HB 24.4.17 Position (menu Presentation > Position) This menu can be used to move the device to its parked position. Fig. 24.34: Dialogue window Position 24.4.18 Evaluation (option) (menu Presentation > Evaluation) By means of this evaluation function, you can compare and evaluate different parameters of the measured caustic (.foc-file) with specified limit values (.pro-file).
  • Page 143 HP-MSM-HB Fig. 24.36: Example for a profile file An evaluation is carried out as follows: 1. Click the button Open Doc and choose your measuring file (.foc-file). 2. Click the button Open Profile and choose your profile file (.pro-file). 3. Choose the desired radius definition in the selection Caustic.

  • Page 144: Communication

    This menu can be used to reconnect a device that was connected previously. 24.5.2 Free communication (menu Communication > Free Communication) By means of this menu you can control the communication via the PRIMES bus. Moreover, the settings for the communication are made here (see chapter 11.3.2 on page 38). Fig. 24.37: Dialogue window Communication >...

  • Page 145: Scan Device List (Menu Communication > Scan Device List)

    Scan device list (menu Communication > Scan device list) Every PRIMES device has a certain bus address. If a device is supposed to be controlled by means of the LaserDiagnosticsSoftware LDS, the address has to be entered here. Moreover addresses can also be added or deleted in this menu.

  • Page 146: Script (Menu Script)

    146. Python is a programming language with efficient abstract data structures and a simple but effective approach for an object-oriented programming. Python is not only suitable for scripts but also for a fast ap- plication development. For programming with Python a separate PRIMES documentation is available. Revision 00 EN - 01/2021...

  • Page 147: Appendix D: File Formats

    HP-MSM-HB Appendix D: File formats 25.1 File “laserds.ini” – an Example The contents of a laserds.ini file are shown below. Some information is gained regarding the startup settings for the system – such as: • default serial interface. • default settings for beam find, such as threshold and spatial resolution for the search.

  • Page 148: Description Of The Mdf File Format

    HP-MSM-HB 25.2 Description of the MDF file format The MDF file format is a simple ASCII-format which includes the main data of a beam measurement – the spatial power density distribution. MDF stands for “mailable data format”. By means of this standardized format conversion problems between different evaluation programs are sup- posed to be reduced and a safe data transmission, e.g.
  • Page 149 HP-MSM-HB Revision 00 EN - 01/2021...

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