Related Manuals for THORLABS LDM56
Summary of Contents for THORLABS LDM56
- Page 1 LDM56(/M) and LDM90(/M) Temperature-Controlled Mounts for Ø5.6 and Ø9 mm Laser Diodes Operating Manual...
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Page 2: Table Of Contents
4.2.2. Special Note for G Style Configuration Laser Diodes ....7 4.3. Laser Diode Controller Connection ......... 8 4.3.1. Using the Thorlabs LDC/ITC Series Laser Controllers ....8 4.3.2. Using a Third-Party Laser Controller ........... 8 4.4. TEC Controller Connection .......... 10 ... -
Page 3: Chapter 1 Warning Symbol Definitions
Temperature-Controlled Laser Diode Mounts Chapter 1: Warning Symbol Definitions Chapter 1 Warning Symbol Definitions Below is a list of warning symbols you may encounter in this manual or on your device. Symbol Description Direct Current Alternating Current Both Direct and Alternating Current Earth Ground Terminal Protective Conductor Terminal Frame or Chassis Terminal... -
Page 4: Chapter 2 Safety
Temperature-Controlled Laser Diode Mounts Chapter 2: Safety Chapter 2 Safety WARNING This unit must not be operated in explosive environments WARNING Avoid exposure – laser radiation emitted from apertures. Page 2 TTN121126-D02... -
Page 5: Chapter 3 Description
E, G, and H configurations, and all four-pin style D laser diodes. The LDM56(/M) and LDM90(/M) are also compatible with style G laser diodes by setting an internal jumper as discussed in section 4.2.2. Please note that style F laser diodes are incompatible with the LDM56(/M) and LDM90(/M) mounts. - Page 6 Temperature-Controlled Laser Diode Mounts Chapter 3: Description PD Switch LD Switch Laser On DIP Switches Indicator Pin Code Select Jumper LD Driver Connector RF Input (SMA)) TEC Driver Connector Remote Interlock Figure 1 Location of Features Page 4 TTN121126-D02...
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Page 7: Chapter 4 Setup
Package Contents LDM56(/M) or LDM90(/M) Mount Diode Retainer(s): LDM56(/M): 5.6 mm TO-Can Laser Diode Mounting Flange LDM90(/M): 9.0 mm Standard and 9.0 mm High Heat Load Laser Diode Mounting Flanges 2-56 x 1/8" Screws for Mounting Flange ... - Page 8 Most laser diodes are three pins with the case tied to one of the laser pins and also to one of the photodiode pins. The other laser and photodiode pin will be isolated from the case. The LDM56(/M) and LDM90(/M) mounts were designed to operate the laser case at ground potential, therefore this common pin will be inserted into either the 3 o’clock or the 9 o’clock position of the laser connector.
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Page 9: Special Note For G Style Configuration Laser Diodes
Special Note for G Style Configuration Laser Diodes Figure 4 LDM56(/M) and LDM90(/M) Internal Circuitry Showing Jumper JP5 In order to drive a style G laser diode, the PD pin in the mount must be grounded. The red jumper is set across the bottom and left pin for operation with A, B, C, D, E, and H pin code laser diodes (Figure 5). -
Page 10: Laser Diode Controller Connection
4.3.1. Using the Thorlabs LDC/ITC Series Laser Controllers The LDM56(/M) and LDM90(/M) is compatible with all Thorlabs LDC LD controllers and ITC series combination controllers (LD and TEC). Appropriate cables with DB9 connectors are included with Thorlabs controllers and ensure that the controllers cannot be connected incorrectly. - Page 11 Signal Description This pin is the input to the LD Status Indicator and Interlock Interlock and Circuits. When using Thorlabs LDCs no external circuitry is Status Pin required. To use these features with third-party controllers (LDC Specific) please refer to the Status and Interlock section of this manual.
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Page 12: Tec Controller Connection
4.4.1. Using the Thorlabs TED Series TEC Controllers The LDM56(/M) and LDM90(/M) is best used with Thorlabs TED200 or related TEC controllers. The TED series are shipped with a mating DB9 cable that plugs directly into the controller and laser mount. Using the cable supplied with the TED, the controller cannot be connected incorrectly. -
Page 13: Mounting Other Accessories
LDMXY Flexure Adapter, which provides ±1.0 mm of XY translation for collimation optics. Also included are eight 4-40 tapped holes for attaching Thorlabs 30 mm or 60 mm cage assembly products. Using the combination of the SM1 threaded mount and cage assembly products, a wide variety of optical systems can be easily assembled form off-the-shelf products. -
Page 14: Making The Safety Interlock Connections
4.6. Making the Safety Interlock Connections The LDM56(/M) and LDM90(/M) is equipped with a Remote Interlock connector located on the side panel. In order to enable the laser source, a short circuit must be applied across the terminals of the remote interlock connector. In practice this connection is made available to allow the user to connect a remote actuated switch to the connector (i.e. -
Page 15: Chapter 5 Operation
5.1. RF Modulation The LDM56(/M) and LDM90(/M) has an RF input for modulating the laser with an external RF source up to 600 MHz. This is a 50 Ω input that is AC-coupled directly to the laser through a Bias-Tee network. To calculate the desired RF power to modulate the laser determine the amount of modulating current needed from the laser manufacturer’s data sheets and use the following calculations:... -
Page 16: Status And Interlocks
Figure 10 Switches on Top of LDM56(/M) and LDM90(/M) Mounts DIP Switch 2 allows the user to internally tie the LD ground to earth ground when in the down position as shown above. Care should be taken when setting the LDGND switch. -
Page 17: Temperature Sensor
Chapter 5: Operation 5.3. Temperature Sensor The LDM56(/M) and LDM90(/M) includes a 10 kΩ thermistor for temperature feedback. We recommend setting the sensor type to Thermistor (low) when operating with a Thorlabs ITC or TED4xxx series controller. The graph below shows the typical thermistor resistance versus temperature. -
Page 18: Chapter 6 Maintenance
Chapter 6 Maintenance There are no serviceable parts in the LDM56(/M) and LDM90(/M). The housing may be cleaned by wiping with a soft damp cloth. If you suspect a problem with your LDM56(/M) and LDM90(/M), please call Thorlabs and an engineer will be happy to assist you. -
Page 19: Chapter 7 Troubleshooting
Solution Remote Interlock is open. Make sure that either the “shorting device” is installed in the INTERLOCK connector on the side of the LDM56(/M) and LDM90(/M). If you have a remote interlock switch Laser Driver will not connected to this INTERLOCK connector it must be in a enable. -
Page 20: Chapter 8 Specifications
30 mm and 60 mm Cage Systems LDM56, LDM90: 1/4"-20 (9 Places) Mounting Holes LDM56/M, LDM90/M: M6x1.0 (9 Places) Note that G style LD configuration requires setting an internal jumper of the LDM56(/M) and LDM90(/M) mount. Refer to section 4.2.2. Page 18 TTN121126-D02... -
Page 21: Chapter 9 Drawing
Temperature-Controlled Laser Diode Mounts Chapter 9: Drawing Chapter 9 Drawing Figure 12 Mechanical Diagram of LDM56(/M) and LDM90(/M) Mounts (Imperial Mounting Holes: 1/4"-20, Metric Mounting Holes: M6) Rev C, February 20, 2018 Page 19... -
Page 22: Chapter 10 Regulatory
Waste Treatment is Your Own Responsibility If you do not return an “end of life” unit to Thorlabs, you must hand it to a company specialized in waste recovery. Do not dispose of the unit in a litter bin or at a public waste disposal site. -
Page 23: Chapter 11 Thorlabs Worldwide Contacts
Fax: +46-31-703-40-45 www.thorlabs.de www.thorlabs.com Email: europe@thorlabs.com Email: scandinavia@thorlabs.com France Brazil Thorlabs SAS Thorlabs Vendas de Fotônicos Ltda. 109, rue des Côtes Rua Riachuelo, 171 78600 Maisons-Laffitte São Carlos, SP 13560-110 France Brazil Tel: +33 (0) 970 444 844 Tel: +55-16-3413 7062... - Page 24 www.thorlabs.com...
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