NKT Photonics Koheras BASIK Product Manual
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NKT Photonics Koheras BASIK Product Manual

Low noise single frequency laser module
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Koheras BASIK
Low Noise Single Frequency Laser Module
PRODUCT GUIDE
Item:
Customer Revision:
NKTP Revision:
Release Date:
800-601-01
1.5
2.0
03-2022

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Summary of Contents for NKT Photonics Koheras BASIK

  • Page 1 Koheras BASIK Low Noise Single Frequency Laser Module PRODUCT GUIDE Item: 800-601-01 Customer Revision: NKTP Revision: Release Date: 03-2022...
  • Page 2 PRODUCT GUIDE This guide includes the following NKT Photonics Lasers: Koheras BASIK Low Noise Single Frequency Laser Module W-10456...

  • Page 3: Guide Overview

    Terminology This guide may refer to the Koheras BASIK modules as “the laser” or as “the module”. In specific cases where a distinction is required, this guide will use the actual laser model names. Target audience This guide is for technical personnel involved in the selection, planning and deployment of lasers in laboratory and industrial settings.
  • Page 4 • Chapter 5 “Using CONTROL” — Includes descriptions of all NKT CONTROL menu, settings, and panel items. • Chapter 6 “Software Development Kit” — Includes descriptions and procedures for some of the key settings that can be configured and monitored using the SDK’s Generic User Interface. •...
  • Page 5 Date Revision Changes 2021-01 Updated support contact information in appendix B. 2022-02 1.4 Updates include minor grammar corrections and improvements in language clarity. Some figures have also been modified for clarity. • Updated Table 20 on page 113. • Updated Procedure 9 on page 115 to Windows 10.

  • Page 7: Table Of Contents

    Guide Overview ....................3 Terminology ..................3 TABLES ......................13 FIGURES ...................... 15 PROCEDURES .................... 19 KOHERAS BASIK DESCRIPTION Section 1 1 Laser Description ..................23 Features and options ................. 23 Theory of operation ................24 Module variants ..................24 Configuration ID .................
  • Page 8 High temperature shutdown ............... 30 Power verification ................30 Miscellaneous ..................31 Power supply ..................31 Safety ....................31 Accessories ..................31 Optical interface..................32 Optical fibers, connectors and adapters ..........32 Laser control ................... 33 User interface ..................33 Status LEDs ....................
  • Page 9 Installing the software ................ 49 Software Development Kit ..............50 Generic User Interface ............... 50 Connecting CONTROL to the laser ............50 Connecting the SDK GUI to the laser............. 53 4 Turning ON the Laser ..................55 Safety ..................... 55 Preparation .....................
  • Page 10 Log Downloader ................. 73 Extensions Overview ................. 74 CONTROL – Control panel ..............75 Wavelength ..................75 Power mode ..................76 Current mode ..................76 Device Monitor..................77 Application log ..................78 6 Software Development Kit ................79 Read/write registers................80 Tuning the wavelength ...............
  • Page 11 INSTALLING THE LASER Section 3 7 Mechanical Installation .................. 93 General ....................93 Standalone mounting ................93 Heat dissipation ................. 93 Slide-in mounting..................95 Operating and storage environment ..........96 8 Connecting the Laser ..................97 Connecting the safety interlock .............. 97 Interlock operation ................
  • Page 12 Main electrical interface ................ 113 D CONTROL Software ................... 115 Installing CONTROL ................115 E RS-485 adapter ................... 121 Main adapter ..................121 F Configuration ID ..................123 Module Configuration ID ..............123...

  • Page 13: Tables

    Table 5: Module labels ..................35 Table 6: Wavelength modulation settings............38 Table 7: Narrow vs wide band wavelength modulation ........42 Table 8: Koheras BASIK PC connection kit............49 Table 9: CONTROL panels and menu items............ 59 Table 10: Device Monitor parameters .............. 77 Table 11: Generic user interface registers ............

  • Page 15: Figures

    FIGURES Figure 1: BASIK front panel ................23 Figure 2: BASIK front panel layout ..............26 Figure 3: BASIK rear panel layout ..............27 Figure 4: Frequency response using wavelength modulation ......28 Figure 5: USB-RS485 Adapter ................ 31 Figure 6: BASIK equipped with fiber cord and FC/APC connector ....32 Figure 7: Status LEDs ..................
  • Page 16 Figure 29: Wavelength modulation - internal source ........66 Figure 30: Wavelength modulation - external source ........66 Figure 31: Wavelength modulation - both ............67 Figure 32: Internal generator waveform selection – Type setting ....67 Figure 33: Turning on wavelength modulation ..........69 Figure 34: Trigger type –...
  • Page 17 Figure 60: Error and status tab ................ 89 Figure 61: Graphing tab ................... 90 Figure 62: Heat transfer surface - BASIK rear panel ........93 Figure 63: Heat transfer surface - BASIK rear panel ........94 Figure 64: Mounting the laser ................95 Figure 65: Front panel mounting holes and handle .........

  • Page 19: Procedures

    PROCEDURES Procedure 1: Connecting CONTROL to the laser ........... 51 Procedure 2: Connecting the SDK Generic User Interface to the laser ..53 Procedure 3: Turning on the laser using CONTROL........56 Procedure 4: Turning on the laser using the Generic User Interface ....58 Procedure 5: Relocating panels ..............

  • Page 21: Koheras Basik Description

    SECTION 1 KOHERAS BASIK DESCRIPTION This section provides a description of the laser and its chassis types. It includes the following topics: • “Laser Description” on page 23 • “Module variants” on page 24 • “Main electrical Interface” on page 26 •...

  • Page 23: Laser Description

    Laser Description Koheras BASIK is a single frequency distributed feedback (DFB) fiber laser system housed in a robust package with passive vibration reduction. The laser is available as single laser or as a building block used for example, in multi channel DWDM systems.

  • Page 24: Theory Of Operation

    Module variants The Koheras BASIK modules are available in four variants. The modules are primarily classified by their wavelength and output power. Table 1 describes the key technical differences between the variants.

  • Page 25: Output Power

    Front and rear panels Output power The output power is fixed for each module type. However, depending on the module type, the set output power ranges from greater than 10 mW and up to and including 40 mW – see Table Tuning types The laser’s variants can also be specified with different tuning options.

  • Page 26: Rear Panel

    Front and rear panels For more information see “Status LEDs” on page Figure 2 BASIK front panel layout Status LEDs Optical output A Handle Optical output B (SC/APC option) (SC/APC option) A BASIK includes a handle mounted underneath the status LEDs on the front panel.

  • Page 27: Optical Specifications

    Optical specifications Figure 3 BASIK rear panel layout M4 screw hole M4 screw hole Alignment hole Main electrical interface (used with an external post) (DIN 30 pin C/3 - male) Alignment and tapped holes If the laser is inserted into a slotted housing, the alignment hole of the module’s rear panel is designed to slide onto an alignment post fixed to the housing.

  • Page 28: Fast Wavelength Modulation

    Laser features temperature of the laser cavity itself also changes such that the laser wavelength changes in response to both thermo-optic and physical changes in the optical path length. See “Tuning the wavelength” on page Fast wavelength As an option, the laser includes the capability to use an external signal to modulate the emission wavelength using a Piezo.

  • Page 29: External Cavity Stabilization

    Laser features External cavity X15 modules support the use of the Pound-Hall-Drever technique to reduce low frequency phase noise to an ultra-low level. It requires that the X15 output is stabilization stabilized using an external cavity circuit. Refer to “External cavity stabilization (BASIK X15)”...

  • Page 30: Emission Delay

    Laser features Koheras ADJUSTIK & ACOUSTIK If the module is used within either an ADJUSTIK or ACOUSTIK chassis, Auto-start is overruled and cannot enable emission even if the Auto-start bit is set. KeyUpdater To enable/disable the Auto-Start feature, use the KeyUpdater tool in CONTROL with either key below.

  • Page 31: Miscellaneous

    The laser requires an external 12 VDC power source which is not included with the laser. Power is connected through the main electrical interface connector, “Main electrical Interface” on page The NKT Photonics RS-485 adapter kit includes a power supply for the laser. See “Accessories” –...

  • Page 32: Optical Interface

    – or – • connector adapters (FC/APC adapter or SC/APC adapter) Figure 6 shows a Koheras BASIK assigned with a fiber patch cable and FC/APC connector assigned to optical port A as the main output. Figure 2, shows the front panel layout when both optical ports are assigned as SC/APC adapters.

  • Page 33: Laser Control

    ~10 microns ~10 microns Fiber Mode Field Diameter Numerical Aperture 0.14 0.125 Mode field diameter is approximate - contact NKT Photonics Support contact details on Support for more information ( page 112 Laser control User interface The laser and any associated accessories are controlled using either NKT Photonics CONTROL Graphical User Interface (GUI) installed on a PC or through the NKTP Software Development kit (SDK).

  • Page 34: Module Labels

    Note: the laser until you are familiar with the controls and have O NOT OPERATE taken all precautions necessary as described in the document: Koheras BASIK Safety, Handling and Regulatory Information. Module labels The Koheras BASIK modules include multiple labels that indicate hazards, regulatory, or manufacturing information.

  • Page 35: Table 5 Module Labels

    Module labels Figure 9 Front panel label locations Table 5 Module labels Label Panel Description Classification - Safety information stating the laser Emission emission hazards and the laser’s class Hazards rating. Manufacturing Side Manufacturing information including address, part and serial number, date manufactured and regulatory compliance.
  • Page 36 Module labels...

  • Page 37: Modulation

    Configuring As stated above, you can use the option to modulate the wavelength of the external and Koheras BASIK module with either: internal wavelength • an external electrical signal applied to the Wavelength+/- input, modulation •...

  • Page 38: Wavelength+/- Signal

    Fast wavelength modulation Table 6 Wavelength modulation settings Setting Function For CONTROL see For SDK see External wavelength Sets wavelength page 65 page 82 modulation modulation to external signal mode. Internal function Sets wavelength page 67 page 82 generator modulation to internal function generator mode.

  • Page 39: Differential Input

    Fast wavelength modulation Differential input When configured as an input, the Wavelength+/- interface can be connected to a differential signal with an amplitude of up to 2x 5 Vpp as shown in Figure Figure 10 Differential input signal for wavelength modulation Note: To prevent noise being induced that could create undesired phase noise, it is recommended to disable the wavelength modulation setting when it is not in...

  • Page 40: Figure 12: Single-Ended Input Signal With 2.5 V

    Fast wavelength modulation 2.5 V or GND. A single-ended 5 Vpp signal generates half the modulation compared to a differential 2x5 Vpp input. Figure 12 Single-ended input signal with 2.5 V Figure 13 shows the Wavelength- pin connected to the same potential as the common mode voltage of the Wavelength+ signal, the optical output will be modulated around its center wavelength.

  • Page 41: Wavelength- To Gnd

    Fast wavelength modulation Wavelength- to Figure 15, the Wavelength- signal is connected to GND and the Wavelength+ signal is modulated between 0 and 5 V as shown in Figure 14, the optical output is modulated above its thermally controlled wavelength. Figure 14 Single-ended input signal with GND on an unused branch Figure 15 Single-ended input connections with 0 V on an unused branch...

  • Page 42: Differential Output

    1.6 Hz. Setting the Koheras BASIK X15 to DC coupling allows the laser to lock coupling to an external reference signal that for example, uses the Pound Drever Hall technique.

  • Page 43: Figure 17 Basik X15 Wavelength Modulation Response

    Fast wavelength modulation Figure 18 (E15/C15/Y10) show the responses when the modulation signal varies from 1 to 100 kHz. X15 frequency response Figure 17 shows the measured frequency response of the BASIK X15 for both wide and narrow ranges: • Wide –...

  • Page 44: External Cavity Stabilization (Basik X15)

    External cavity stabilization (BASIK X15) • Narrow – 10x (times) less with a 3 dB cut-off at 1 kHz Figure 18 BASIK E15/C15/Y10 wavelength modulation response External cavity stabilization (BASIK X15) An X15 module can be locked to an external cavity to obtain less low-frequency phase noise by using the Pound-Drever-Hall technique.

  • Page 45: Setting Up External Cavity Stabilization

    External cavity stabilization (BASIK X15) Setting up external Follow the steps below to configure and enable external cavity locking: cavity stabilization Enable external modulation (see “Modulation source” on page 65). 2. Configure the wavelength modulation input as DC coupled (see “Modulation coupling”...
  • Page 46 External cavity stabilization (BASIK X15)

  • Page 47: Operating The Laser

    SECTION 2 OPERATING THE LASER This section describes how to manage and operate the laser and includes the chapters: • “Communicating with the Laser” on page 49 • “Turning ON the Laser” on page 55 • “Using CONTROL” on page 59 •...

  • Page 49: Communicating With The Laser

    15 A power cord C7 to EU/US/UK USB cable – Type A to B CONTROL software The laser is shipped with the NKT Photonics CONTROL software installer on a USB key. You can also download the most recent CONTROL software from the following link: https://www.nktphotonics.com/lasers-fibers/support/software-drivers/...

  • Page 50: Software Development Kit

    Software Development Kit Software Development Kit NKT Photonics provides an SDK for use when integrating the laser with your custom control system. You can download the SDK from the same URL where CONTROL installer is found: https://www.nktphotonics.com/lasers-fibers/support/software-drivers/ To install the SDK, run the installer and follow the instructions of the install wizard.
  • Page 51 Connecting CONTROL to the laser Action Launch CONTROL by either: • clicking on Windows – Start – Programs – NKT Photonics – CONTROL – or – • double clicking the CONTROL shortcut on the desktop The CONTROL window opens. Click on the “Connect” button in the left side of the window.

  • Page 52: Procedure 2 Connecting The Sdk Generic User Interface To The Laser

    SDK installed on it. The SDK includes a Generic User Interface (GUI) that can read and write registers in the laser module. You can use the NKT Photonics RS-485 connection kit including the BASIK interface board to connect the laser to the PC’s USB port.

  • Page 53: Connecting The Sdk Gui To The Laser

    Connecting the SDK GUI to the laser Action 4 The Generic User Interface connects to the laser and displays the current register values.
  • Page 54 Connecting the SDK GUI to the laser...

  • Page 55: Turning On The Laser

    Warning: Turning on the laser emits hazardous laser Class 3B radiation. Ensure to observe and implement all safety regulations, warnings and cautions in this guide and the Koheras BASIK Safety, Handling and Regulatory Information document before continuing. Warning: Ensure the fiber connector face (tip) is clean. Optical power transmitted through the connector may burn particles on the connector face damaging it.

  • Page 56: Controlling The Laser Emissions

    Controlling the laser emissions Controlling the laser emissions Turning On the To turn on the laser using CONTROL follow the steps in Procedure 3. To turn it on using the Generic User Interface use Procedure laser Note: The laser is equipped with internal temperature sensors that monitor the temperature of sensitive components.

  • Page 57: Procedure 4 Turning On The Laser Using The Generic User Interface

    The COM port connected should have an asterisk (*) next to it in the list. Note: For a full description of the SDK, registers and the Generic User Interface, refer to the NKT Photonics document: SDK Instruction Manual. The manual is in- stalled when the SDK installer is run.
  • Page 58 Controlling the laser emissions...

  • Page 59: Using Control

    Using CONTROL CONTROL overview The CONTROL interface includes multiple panels and a selection of menu drop down items in the upper left corner. Using the Window drop down menu, you can add or remove the displayed panels and panels can be dragged within the main window or into separate windows.

  • Page 60: Relocating Panels

    CONTROL overview Relocating panels You can drag the different panels of CONTROL to any location within the main interface or into a separate floating panel. Procedure 5 describes how to relocate a panel within the main window. Procedure 5 Relocating panels Action Left click and hold the top title bar of the panel.

  • Page 61: Toggling Panels Visible

    CONTROL overview Toggling panels Use the Menu > Window drop down menu to check and uncheck panels to be displayed. A blue check mark indicates the panel is displayed. visible Figure 23 Toggling panel visibility Check the panels to display them Note: To close a panel, click the X at the upper right corner of the panel.

  • Page 62: Device Selector

    CONTROL overview Figure 25 Connect button Click CONTROL scans for connected devices Device selector The Device Selector panel shows an icon for each connected device. Figure 26 shows the device selector for an BASIK laser. If multiple lasers are detected by CONTROL, click on the BASIK icon to brings up its controls.

  • Page 63: Status Panel

    Status panel Status panel The status panel provides status indicators, error messages, emission controls and a settings drop down menu. Figure 27 Status panel Click Status indicators The panel displays the following indicators: Interlock Indicates if power is connected to the laser. •...

  • Page 64: Module Info

    Status panel • ON Amber – The laser is in the process of warming up or an error is detected. Module info The Module Info section shows the following: • Laser serial number • Laser firmware revision Measurements Displays the system temperature. WL mod button and Button indicator...

  • Page 65: Control Settings

    CONTROL settings CONTROL settings The GUI settings are accessible by clicking the gear icon in the upper right corner of the status panel. Clicking the gear icon displays a menu of setting items as shown in Figure Figure 28 GUI settings Click the gear icon to access the menu Setting Item...

  • Page 66: Figure 29 Wavelength Modulation - Internal Source

    CONTROL settings You can connect an external signal to either the BASIK interface board connectors as described in “Connecting modulation signals” on page 99 directly to the main electrical interface pins. The pin assignments are described Table 19 on page 113.

  • Page 67: Figure 31 Wavelength Modulation - Both

    CONTROL settings Figure 31 Wavelength modulation - both Modulation type (internal mode) If the modulation Source is set to Internal, you can set the signal waveform type that is generated internally. Click the Type drop-down menu arrow and select either Sinusoidal, Triangle, Sawtooth or an Inverse sawtooth waveform. Figure 32 Internal generator waveform selection –...
  • Page 68 CONTROL settings When set to Narrow, modulation depth is limited but the X15’s low phase noise is maintained. To increase the modulation depth, change the Range setting to Wide. When set to Wide, phase noise increases. Note: Refer to “Narrow versus wide modulation range” on page 42 for further in- formation on configuring the modulation range.

  • Page 69: Trigger

    CONTROL settings Figure 33 Turning on wavelength modulation Click to enable wavelength modulation Trigger The trigger function can initiate emission using an input logic trigger signal or it can output a logic trigger signal when emission is enabled. The trigger signal output or input is connected to pin B4 of the main electrical interface (see Table 19).

  • Page 70: Power/Current Mode

    CONTROL settings Figure 34 Trigger type – Input Figure 35 Trigger type – Output Power/Current You can set the laser output Mode to either Power or Current as described in mode “Operating mode” on page 29. Click the menu item shown in Figure 36 to toggle the mode.

  • Page 71: Auto-Start

    CONTROL settings Figure 36 Power and current mode controls Auto-start To enable the “Auto-start” function, select the Auto-start checkbox. Figure 37 Auto-start setting When checked, emission is enabled upon connection of DC power. View Select the Module info checkbox to display the laser serial number, firmware release number or system temperature within the status panel.

  • Page 72: Control Menu Items

    Procedure 6 Using the Key Updater tool Action Enter a key code in the field “Enter key code”. NOTE: Key codes are generated by NKT Photonics. In the list of modules, check the box on the right of each applicable module.

  • Page 73: Log Downloader

    Photonics support personnel. Log Downloader If your laser requires support from NKT Photonics, our support engineers may request you send them log files collected by the laser. You can use the log downloader tool to save laser log files to your CONTROL PC.

  • Page 74: Extensions Overview

    Use this tool to view the installed extensions (similar to plugins) that are included Overview with CONTROL. The extensions are found in the following folder: C:\Program Files (x86)\NKT Photonics\NKTP CONTROL\Plugins To view the extensions, open the Tools menu and click on Extensions Overview. The Extensions Overview window is launched as shown in...

  • Page 75: Control - Control Panel

    CONTROL. CONTROL – Control panel For the Koheras BASIK the control panel can be configured to present different operating mode controls for either Power or Current mode. The modes are selected by clicking on the Settings drop down menu (gear icon) in the status panel.

  • Page 76: Power Mode

    CONTROL – Control panel Figure 41 Wavelength controls Select the wavelength control type Power mode In the Power operating mode the optical output power level is used to control the laser’s output. The panel provides both a wavelength or its offset control in nanometers (or picometers for the offset) and an output power control that can be scaled in either mW or dBm.

  • Page 77: Device Monitor

    Device Monitor Device Monitor The device monitor provides a live display of transmit and receive parameters of the laser’s communication ports and any connected device modules. The display parameter values are continuously updated and can be used to help debug communication issues with connected devices. The parameters are described in Table Table 10 Device Monitor parameters...

  • Page 78: Application Log

    Application log Parameter Description Total number of communication errors with framing or protocol errors. Hover over the icon to list more details. Busy Total number of busy responses from the module. Busy responses occur when a module receives a message but cannot process it due to its current work load.

  • Page 79: Software Development Kit

    87 Note: For a full description of the SDK, registers and the Generic User Interface, refer to the NKT Photonics document: SDK Instruction Manual. The manual is in- stalled when the SDK installer is run.

  • Page 80: Read/Write Registers

    (from the nominal wavelength) into register 0x2A of the memory module. Figure 44 Setting the wavelength offset Input the wavelength offset in picometers into the register field and then press enter. Contact NKT Photonics support for more information regarding the range settable. Setting the To set the “Power/Current...

  • Page 81: Setting The Emission Delay

    Read/write registers Figure 46 Setting the Auto-start function Setting the To set the emission delay timer use register 0x3A. Input the time in seconds and emission delay tenths of seconds into the register. Figure 47 Setting the emission delay Narrow and wide To configure the “Modulation range”...

  • Page 82: Setting The Wavelength Modulation Source

    Read/write registers Figure 48 Setting the modulation range parameter Setting the To configure the “Modulation source” for the wavelength modulation option, set wavelength the following bits of register 0x31: modulation source • Bit 2 – sets external wavelength modulation where: 0 disabled/1 enabled. •...

  • Page 83: Setting The Wavelength Modulation Signal Coupling

    Read/write registers • 0x31 set to 0512 – internal (generator) source - narrow range • Both • 0x31 set to 0514 – both (internal & external) - wide range • 0x31 set to 0516 – both (internal & external) - narrow range Note: In this example, only the hex digits in the rightmost two digit positions are modified since bits 2 and 4 are in the first 8 bits of the 16 bit register.

  • Page 84: Internal Generator Frequency

    Read/write registers Internal generator The internal function generator frequency is set with register 0xB8.0. The value is set with a 32-bit float value in hertz with a range from 0.008 to 100,000 Hz. frequency Figure 51 Setting the internal generator frequency Internal generator The amplitude of the internal function generator signal is set with register 0x2B.

  • Page 85: Internal Generator -Signal Output

    Read/write registers • 01 – sinusoidal • 41 - triangular • 81 – sawtooth • C1 – inverse sawtooth Figure 53 Setting the internal generator waveform Internal generator - To enable or disable outputting the internal generator signal on the Wavelength signal output +/- pins, set bit 5 of register 0x31, where setting the bit to ‘0’...

  • Page 86: Wavelength Modulation On/Off

    Read/write registers Wavelength To enable wavelength modulation set register 0xB5, where ‘0’ means ‘OFF’ and ‘1’ means ‘ON’. modulation on/off Figure 55 Turning ON wavelength modulation Trigger setting To configure the Trigger signal pin as an input or output, set register 0xB4 bit 1, input/output where ‘0’...

  • Page 87: Trigger Indicates Emission

    Read/write registers Trigger indicates To configure the trigger signal to indicate laser emission is enabled set bit 4 of register 0xB4, where ‘1’ means ‘Emission’ and ‘0’ means OFF which results in no emission signal being sent even if the laser emission is enabled. Note: Bit 4 cannot be set simultaneously with bit 2 of register 0xB4.

  • Page 88: Readings

    Readings Readings For each module, click on the Readings tab to view the contents of read-only registers. Of particular interest are registers 17 and 90. When laser emission is enabled, the output power in mW and dBm is displayed in these registers respectively.

  • Page 89: Errors And Status Indicators

    Status indicators The status indicators will be lit green if the condition in the text is true. Error codes If an error code is displayed and cannot be cleared contact NKT Photonics support, see “Support contact details” on page 112.

  • Page 90: Figure 61 Graphing Tab

    Graphing Figure 61 Graphing tab Y-axis settings X-axis...

  • Page 91: Installing The Laser

    SECTION 3 INSTALLING THE LASER This section describes how to install the laser and includes the chapters: • “Mechanical Installation” on page 93 • “Connecting the Laser” on page 97...

  • Page 93: Mechanical Installation

    Mechanical Installation The laser module is designed to operate as either a stand-alone module installed on a flat surface or as a sub-module where a single module or multiple modules are inserted into a shelf or other appropriate receptacle. The laser generates heat that must be dissipated.

  • Page 94: Figure 63 Heat Transfer Surface - Basik Rear Panel

    Standalone mounting Thermal resistance Thermal resistance (R ) to the environment depends on the maximum θ environmental temperature. The maximum module temperature and maximum power consumption for the module is calculated as follows: = (t – t ) / P θ...

  • Page 95: Slide-In Mounting

    Slide-in mounting Slide-in mounting The laser module can be installed in a custom shelf or receptacle where it is designed to slide into suitable rails or a receptacle. The mount must accommodate the dimensions of the laser (see Figure 71) so it is held firmly, heat is dissipated from the rear panel surface and the electrical connection aligns and connects with the rear panel 16 pin IDC connector.

  • Page 96: Operating And Storage Environment

    Warning: The Koheras BASIK is a Class 3B laser product and its operation facility and conditions must comply with the standards listed below or similar: • CFR21 1040.10 & Laser Notice LN50 •...

  • Page 97: Connecting The Laser

    Connecting the Laser Before operating the laser, follow the procedures in this chapter to ensure its correct and safe operation. For information on how to connect: • The safety interlock – see “Connecting the safety interlock” on page 97 • Power –...

  • Page 98: Connecting An Interlock Switch

    Caution: Do not short-circuit the interlock input. Short-circuiting the interlock cir- cumvents safety regulations and NKT Photonics does not take liability for any in- juries or damage caused by doing so. Caution: The switch connected to the interlock must be of an approved type.

  • Page 99: Connecting Power

    Connecting power Connecting power The RS-485 adapter kit includes an external power supply shown in Figure The power supply connects 12 volts DC output to the RS-485 adapter by means of a two pole barrel connector. Power is delivered to the laser through the ribbon cable from the adapter to the laser’s 16 pin main interface connector (via the BASIK interface board).

  • Page 100: Figure 68 Basik Interface Board

    Emission indicator LED DIN 41612 female C/3 Note: If desired, the Koheras BASIK can connect directly to a system main board if it supports a DIN 41612 female C/3 connector. DC Input Connector As an alternative to the 2-pin screw terminal, the module can be connected to 12 volts DC using the 2.1 mm barrel type DC input connector.

  • Page 101: Table 13 Wavelength Modulation Pin Descriptions

    Connecting modulation signals Table 13 Wavelength modulation pin descriptions Name Description Wavelength+ Positive branch of differential input/output for wavelength modulation. AGND Analog ground for wavelength modulation signals Wavelength- Negative branch of differential input/output for wavelength modulation. Emission indicator LED The emission indicator LED turns ON red when the laser emission is enabled. Power indicator LED The power LED turns ON green when a 12 volt DC supply is connected to the module.

  • Page 102: Connecting The Trigger Input Or Output

    Connecting the trigger input or output DIN 41612 female C/3 The DIN 41612 female C/3 connector on the bottom panel of a BASIK interface board plugs into the main electrical interface of a BASIK module. Connecting the trigger input or output The modules include a trigger logic input/output signal in the electrical interface (see Table...

  • Page 103: Output Trigger

    Before connecting the optical output connectors, ensure to check the connector tips using a fiber microscope. Check for any deformities, damage, residue or other contaminants at the optical tip of the connector. Either clean the connector or contact NKT Photonics support if replacement is necessary.
  • Page 104 Connecting the optical output...

  • Page 105: Appendices

    APPENDICES The appendices include: Appendix A on page 107 Specifications • Appendix B on page 111 Service and Support • Appendix C on page 113 Interface Pin Assignments • Appendix D on page 115 CONTROL Installation • Appendix E on page 121 RS-485 Adapter •...

  • Page 107: A Specifications

    Specifications Table 15 Optical CW - inherently single frequency Laser Emission < 1.05 < 1.05 < 1.05 < 1.05 Beam Quality (M2) < 0.1 < 0.1 < 15 < 20 Linewidth (kHz) -110 @ 1 Hz Max. Phase Noise [dB((rad/√Hz)/m)] -125 @ 10 Hz -90 @ 10 Hz -69 @ 10 Hz...

  • Page 108: Table 18 Electrical

    Table 18 Electrical All Chassis Models Supply Voltage 11 to 13 VDC 5 A 10 W Maximum Power Consumption Table 19 Safety and regulatory compliances Safety Regulatory EN 60825-1:2014: Safety of laser products EN 61326-1:2013: Electrical equipment for measurement, Part 1: Equipment classification and requirements control and laboratory use EMC requirements –...

  • Page 109: Figure 71 Mechanical Dimensions

    Figure 71 Mechanical dimensions 2x3,50 thru 6,50, depth: 1,00 3x 3,50 thru 0,00 11,00 186,00 217,00 220,00 235,00 2xM4x0.7, depth: 10 3,30, depth: 8,00 22,50 11,25 0,00...

  • Page 111: B Service And Support Information

    Service and support Information Servicing the laser The laser have no user serviceable components. In case of malfunction, contact NKT Photonics using the support channels in section “Support contact details”. Caution: Do not open the laser’s modules. The laser modules are equipped with...

  • Page 112: Support Contact Details

    Support contact details Support contact details If you need help or have questions regarding your Koheras BASIK laser or its accessories, contact NKT Photonics through our support website below: Support website 1. Go to: https://www.nktphotonics.com/lasers-fibers/support/technical-support-and- customer-service/ 2. Scroll down and click or press: 3.

  • Page 113: C Interface Pin Assignments

    Emission Collector output with internal 240 Ω resistor in series. The output is high when the Koheras BASIK laser emission is ON. To provide an external visual indication of emission, connect the anode of an LED directly to this pin and then connect the LEDs cathode to GND.
  • Page 114 Main electrical interface Pin # Signal Description Enable logic input Logic input that permits laser emission when 4 to 12 V is applied. If during emission the input is set low, emission is shut off. This control input is for personal safety and is designed with redundancy within the module.

  • Page 115: Dcontrol Software

    CONTROL Software Installing CONTROL Download the software from: https://www.nktphotonics.com/lasers-fibers/support/software-drivers/ Follow the steps in Procedure Procedure 9 Installing CONTROL Action On the PC, launch the installer package and then click the Installer Run button. The installation wizard appears. Click Next to continue. Accept to use the default installation directory or select another directory by clicking the Browse button.
  • Page 116 Installing CONTROL Action Uncheck the components you do not require. By default, all components are installed. Click Next to continue. Read the End-User License Agreement, and check “I accept the license.” box. Not checking the box ends the installation wizard. Click Next to continue.
  • Page 117 Installing CONTROL Action Check the box to create a desktop shortcut to access Control. Click Next to continue Check the ‘Run the Silicon Labs CP10x driver installation’ box and click Next. Note: If you do not have the driver installed USB connectivity will fail.
  • Page 118 Installing CONTROL Action The wizard displays a progress meter for the installation. Note: a normal install should only take a few seconds. Click Next to install the UART drivers for the PC USB port. The drivers are installed. Note: Depending on your computer this occurs so fast you may not see this.
  • Page 119 Installing CONTROL Action The Silicon Labs drivers is installed successfully. Click Finish to end the driver installation. CONTROL is now installed. Check the Run box to launch CONTROL when the Finish button is clicked. Click Finish to end the installation wizard. End of Procedure...
  • Page 120 Installing CONTROL...

  • Page 121: E Rs-485 Adapter

    • USB to RS-485 communication ports • Interlock connection and jumper • Status LEDs If you need an adapter and its associated components contact NKT Photonics support, see “Support contact details” on page 112. Main adapter Figure 74 depicts the adapter port interfaces that connect to both the PC and laser.

  • Page 122: Table 21 Rs-485 Adapter Status Leds

    Table 21 RS-485 adapter status LEDs Condition Description No Power Connector Power ON Green 12 VDC Power Connected Flash RED Adapter receives USB data (from PC) TX/RX Flash Green Adapter receives RS-485 data (from laser) No laser emission Emission ON Red Laser emission enabled Figure 74 RS-485 adapter Interlock...

  • Page 123: F Configuration Id

    Configuration ID BASIK modules are available as either Y10, C15, E15 or X15 variants (see Table 1 on page 24). The modules can be specified with various options that are indicated in the seven fields of the module configuration ID shown in Figure You can find a list of the standard configuration IDs in Table...
  • Page 124 - ####.## - FCPGT FCPGT - 1.5 - N S S P A - 0 - ####.## - FCPGT NONE - 0.5 - N S S P A - 0 - ####.## - FCBLK NONE - 0.5 - N S S P C - 0 - ####.## - FCPGT NONE - 0.5 - N S S P C - 0...
  • Page 126 Item: 800-601-01 Customer Revision: NKTP Revision: Release Date: 2022-03...

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