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New Focus Vidia-Discrete 64 7 Series User Manual

External-cavity tunable diode lasers
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  • Page 1 Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...
  • Page 2 64X7 rev E.fm Page 1 Tuesday, April 3, 2001 4:16 PM U S E R ’ S G U I D E Vidia-Discrete ™ External-Cavity Tunable Diode Lasers Model Series 64X7 U.S. Patent #5,319,668 & Other Patents Pending Use of controls or adjustments, or performance of procedures other than those specified herein, may result in hazardous radiation exposure.
  • Page 3 64X7 rev E.fm Page 2 Tuesday, April 3, 2001 4:16 PM Warranty New Focus, Inc. guarantees its lasers to be free of material and workmanship defects for one year from the date of shipment. This warranty is in lieu of all other guarantees expressed or implied and does not cover incidental or consequential loss.

  • Page 4: Table Of Contents

    64X7 rev E.fm Page 3 Tuesday, April 3, 2001 4:16 PM Contents User Safety Introduction ........5 Laser Safety .
  • Page 5 Appendix C: Specifications ..... . . 65 4 • Contents NEW FOCUS, Inc. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 6: User Safety

    User Safety Introduction Your safe and effective use of this product is of utmost importance to us at New Focus. Please read the following laser safety information before attempting to operate the laser. Laser Safety The laser radiation emitted from this unit may be harmful. Always follow these precautions: •...
  • Page 7 Stop Power output Local Wavelength Laser Output CLASS IIIB LASER PRODUCT Power Wavelength RS 232 AC Power FC/APC Adjust Adjust 6 • User Safety NEW FOCUS, Inc. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 8: Using The Safety Interlock

    64X7 rev E.fm Page 7 Tuesday, April 3, 2001 4:16 PM Figure 2: Certification label Model Number: on the back of the Serial Number: Manufactured: laser 5215 Hellyer Ave. San Jose CA 95138-1001 U.S. Patent #5,319,668 and Patents Pending This product conforms to the applicable requirements of 21 CFR 1040.10 and 1040.11 at the date of manufacture.
  • Page 9 64X7 rev E.fm Page 8 Tuesday, April 3, 2001 4:16 PM 8 • User Safety NEW FOCUS, Inc. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 10: Getting Started

    If parts are missing or you notice any signs of damage, such as dented or scratched covers, or broken knobs, please contact New Focus immediately. Save the shipping container and packing material for future shipping needs.

  • Page 11: Starting The Laser For The First Time

    Once you turn on the keyswitch and the system initializes (about 30 seconds), you can operate the system remotely through the 10 • Getting Started NEW FOCUS, Inc. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 12 64X7 rev E.fm Page 11 Tuesday, April 3, 2001 4:16 PM IEEE-488 (GPIB) or RS-232 ports. Refer to the “Computer Control” chapter beginning on page 23 for details. 5. Set the power to minimum: For safety, turn the Power Adjust knob counter-clockwise until it stops to set it to minimum power.
  • Page 13 64X7 rev E.fm Page 12 Tuesday, April 3, 2001 4:16 PM 12 • Getting Started NEW FOCUS, Inc. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 14: General Operation

    64X7 rev E.fm Page 13 Tuesday, April 3, 2001 4:16 PM General Operation Overview The Vidia-Discrete laser is a stable, narrow-linewidth source of tunable light. The laser operates in three modes: track mode, automated step- scan mode, and interactive step-scan mode. Use it in track mode to operate it at a set wavelength.

  • Page 15: Using The Front-Panel Controls

    4. Laser Power Button: Turns on and off current to the laser diode. When the laser power is on, this button will remain lit. 14 • General Operation NEW FOCUS, Inc. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 16 64X7 rev E.fm Page 15 Tuesday, April 3, 2001 4:16 PM 5. Addressed Indicator: This indicator is lit whenever the controller is communicating over the computer interface (see the “Computer Control” chapter beginning on page 23). 6. Remote Indicator: This indicator is lit whenever the controller is under computer control, via either the IEEE-488 (GPIB) or the RS- 232 interface.

  • Page 17: Control Combinations

    Adjust GPIB Wavelength Set GPIB address Local RS 232 Adjust GPIB Wavelength Set RS-232 baud rate RS 232 Adjust Local 16 • General Operation NEW FOCUS, Inc. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 18: Back Panel And Laser-Cavity Connections

    64X7 rev E.fm Page 17 Tuesday, April 3, 2001 4:16 PM Back Panel and Laser-Cavity Connections. There are several input and output connectors on the back of the laser controller. Figure 5: Controller back panel Model Number:________________________________ IEEE 488 Serial Number:_________________________________ Manufactured:_________________________________ Laser Sync...

  • Page 19: Turning On The Power

    You can avoid the 45-minute warm-up period by leaving the system power Note: Note: (keyswitch) on when you are not using the laser. 18 • General Operation NEW FOCUS, Inc. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 20: Enabling Local (Front-Panel) Control

    64X7 rev E.fm Page 19 Tuesday, April 3, 2001 4:16 PM Enabling Local (Front-Panel) Control When the laser receives a command from the computer interface, it deactivates all of the front-panel controls except the Laser Power and Local buttons. This remote-control mode is indicated by the Remote LED on the front panel.

  • Page 21: Performing Wavelength Scans

    1. If the laser is in track mode, press the Track button to switch the laser to scan mode (the light in the Track button should be off). 20 • General Operation NEW FOCUS, Inc. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 22: Modulating The Laser Output

    64X7 rev E.fm Page 21 Tuesday, April 3, 2001 4:16 PM 2. Press the Hi Res/Step button once to initiate the scan (the laser will stay tuned to the start wavelength). 3. Press the Hi Res/Step button to advance the laser to each step. 4.

  • Page 23: Reading An Input Signal

    Detector Input Guidelines Connector Type Voltage Range 0 V to +5 V Input Frequency DC–10 kHz Impedance 51 kΩ 22 • General Operation NEW FOCUS, Inc. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 24: Computer Control

    64X7 rev E.fm Page 23 Tuesday, April 3, 2001 4:16 PM Computer Control Introduction The Vidia-Discrete can be operated remotely through either the parallel IEEE-488 (GPIB) interface or the serial RS-232 interface. Most computers have RS-232 interfaces built in. In order to use the IEEE-488 interface, a special card or interface box is necessary.

  • Page 25: Using The Rs-232 Interface

    8-data bit, no parity checking, 1 stop bit, no hardware handshake. Use the following steps to set the controller’s baud rate. 24 • Computer Control NEW FOCUS, Inc. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 26: Restoring Local (Front-Panel) Control

    64X7 rev E.fm Page 25 Tuesday, April 3, 2001 4:16 PM See “Programming for the Vidia-Discrete” on page 26 for more information on using the RS-232 interface. Setting the Baud Rate for RS-232 The RS-232 interface works at baud rates of 300, 1200, 2400, 4800, 9600, or 19200.
  • Page 27 The controller does not echo commands. • When the controller is first turned on, all computer-control commands other than OPC? will receive the response “Initializing.” 26 • Computer Control NEW FOCUS, Inc. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 28: Conventions

    64X7 rev E.fm Page 27 Tuesday, April 3, 2001 4:16 PM • The controller returns “OK” for properly executed set commands. • If unable to carry out a command, the controller will use one of the following responses: • “Out of Range” if the given value is outside the allowed range. •...

  • Page 29: Command Summary

    Page Set Wavelength (nm) :WAVE <value|MIN|MAX> Query Wavelength :WAVE[ <MIN|MAX>]? Set Wavelength Offset (nm) :WAVE:OFFS <value> Query Wavelength Offset :WAVE:OFFS? 28 • Computer Control NEW FOCUS, Inc. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 30 64X7 rev E.fm Page 29 Tuesday, April 3, 2001 4:16 PM Scan Commands Syntax Command Page Switch to Scan Mode: :OUTP:TRAC OFF Query Scan State :OUTP:SCAN:STAT? Set Dwell Time(ms): :WAVE:DWEL <value> Set delay between steps of a step scan Query Dwell Time :WAVE:DWEL? Set Starting Wavelength (nm) :WAVE:STAR <value>...

  • Page 31: Command Definitions

    firmware revision numbers for the laser cavity and controller. Example *IDN? ⇒ New Focus Inc., 6427, 02149, H1.67, C1.00 (Manufacturer = New Focus, Model= 6427, Serial Number=02149, Motor Firmware Rev. 1.67, Con- troller Firmware Rev. 1.00) Operation Complete Query...

  • Page 32: Set Control Mode (Remote/Local)

    64X7 rev E.fm Page 31 Tuesday, April 3, 2001 4:16 PM Set Control Mode (Local/Remote) Syntax :SYSTem:MCONtrol <INT|EXT> Puts controller into Remote mode (using the inter- Description nal DACs) or Local Mode (using the external front- panel controls). INT or EXT Argument INT sets the laser to use the internal DACs and gives you remote control via the computer interface.

  • Page 33: Sense Wavelength (Nm)

    Response “x.x” Units: milliamperes (mA). Example :SENS:CURR:DIOD ⇒ 59.2 32 • Computer Control NEW FOCUS, Inc. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 34: Sense Temperature (˚ C)

    64X7 rev E.fm Page 33 Tuesday, April 3, 2001 4:16 PM Sense Temperature Syntax :SENSe:TEMPerature[:LEVel]:LASEr Returns the temperature of the laser cavity. Description Note: The laser controller actively stabilizes the temperature for optimal performance. If the system is exposed to environments outside the operating temperature of 15–35 ˚C and is unable to maintain the cavity temperature, the temperature display will flash.

  • Page 35: Turn Laser Power On/Off

    “0” for laser current off and “1” for laser current on Response Determine if the laser current is on or off: Example :OUTP? ⇒ 1 (The laser is turned on.) 34 • Computer Control NEW FOCUS, Inc. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 36: Set Laser Output Power (Dbm)

    64X7 rev E.fm Page 35 Tuesday, April 3, 2001 4:16 PM Set Laser Output Power Syntax [:SOURce]:POWer[:LEVel] < value> Sets the power level. Description This command will not turn on power to the laser. Changes made during a scan will not affect the scan. Argument Range: See specifications on page 65.

  • Page 37: Set Power Trim

    “x.xx” Response Example :POW:TRIM? ⇒ 1.12 (The laser has been adjusted to decrease the output power by 12%. [10log(1.12)=0.5 dB]) 36 • Computer Control NEW FOCUS, Inc. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 38: Set Wavelength (Nm)

    64X7 rev E.fm Page 37 Tuesday, April 3, 2001 4:16 PM Wavelength Commands Set Wavelength Syntax [:SOURce]:WAVElength <val|MIN|MAX> Switches the laser to track mode and drives the laser Description to the specified wavelength, the laser’s minimum wavelength, or the laser’s maximum wavelength. If the value is out of range, the laser returns an out of range error and no other action is taken.

  • Page 39: Set Wavelength Offset (Nm)

    “x.xxxxx” Units: nanometers (nm). Example :WAVE:OFFS? ⇒ −0.03000 (The wavelength has been offset by -0.030 nm from the factory-calibrated setting.) 38 • Computer Control NEW FOCUS, Inc. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 40: Switch To Scan Mode

    64X7 rev E.fm Page 39 Tuesday, April 3, 2001 4:16 PM Scan Commands Switch to Scan Mode Syntax :OUTPut:TRACk OFF Switches the laser into scan mode and sets the Description wavelength to the start wavelength so it is ready to start a scan.

  • Page 41: Set Dwell Time(Ms)

    “x” Response Units: milliseconds (ms). Example :WAVE:DWEL? ⇒ 3000 (The laser will pause for 3000 ms between steps.) 40 • Computer Control NEW FOCUS, Inc. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 42: Set Starting Wavelength (Nm)

    64X7 rev E.fm Page 41 Tuesday, April 3, 2001 4:16 PM Set Starting Wavelength for Wavelength Scans Syntax [:SOURce]:WAVElength:STARt <val> Sets the starting wavelength for wavelength scans. Description Argument x.xxx Range: The value must be less than the stop wave- length and must be within the laser’s operating range.

  • Page 43: Set Stopping Wavelength (Nm)

    Queries the ending wavelength for scans. Description “x.xxxx” Response Units: nanometers (nm). Example :WAVE:STOP? ⇒ 1560.0000 (Scans will end at 1560 nm) 42 • Computer Control NEW FOCUS, Inc. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 44 64X7 rev E.fm Page 43 Tuesday, April 3, 2001 4:16 PM Set Step Size Syntax [:SOURce]:WAVElength:STEP <value> Sets the change in wavelength for each step of a step scan. Description x.xxx Argument Range: The value should be less than the difference between the scan’s start and stop wavelengths.

  • Page 45: Start Scanning

    Advance to the next step (once an interactive step Example scan has been initiated): :OUTP:SCAN:STEP ⇒ OK 44 • Computer Control NEW FOCUS, Inc. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 46: Abort Scan (Cancel Scan And Reset)

    64X7 rev E.fm Page 45 Tuesday, April 3, 2001 4:16 PM Abort Scan Syntax :OUTPut:SCAN:ABORt Cancels the current scan and sets the laser to the Description start wavelength. If the laser is in track mode, it will switch to scan mode.
  • Page 47 64X7 rev E.fm Page 46 Tuesday, April 3, 2001 4:16 PM 46 • Computer Control NEW FOCUS, Inc. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 48: Principles Of Operation

    64X7 rev E.fm Page 47 Tuesday, April 3, 2001 4:16 PM Principles of Operation Overview Traditional diode-laser technology provides high reliability, high electrical efficiency, and a wide range of available wavelengths in a compact package. By using an external cavity built around a diode laser, the Vidia-Discrete provides enhanced performance compared to an off-the-shelf diode laser, guaranteeing single-mode operation with narrow linewidth and precise wavelength tuning.
  • Page 49 The magnitude of the effect is diode dependent, but is typically 25–150 MHz/mA. 48 • Principles of Operation NEW FOCUS, Inc. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 50 64X7 rev E.fm Page 49 Tuesday, April 3, 2001 4:16 PM References T. Day, F. Luecke, and M. Brownell, “Continuously tunable diode lasers,” Lasers and Optronics, pages 15–17, June 1993. K. C. Harvey and C. J. Myatt, “External-cavity diode laser using a grazing-incidence diffraction grating,”...
  • Page 51 64X7 rev E.fm Page 50 Tuesday, April 3, 2001 4:16 PM 50 • Principles of Operation NEW FOCUS, Inc. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 52: Changing The Ac-Voltage Selection

    64X7 rev E.fm Page 51 Tuesday, April 3, 2001 4:16 PM Changing the AC-Voltage Selection The laser controller can operate at 100, 120, 220, or 240 V AC, at AC frequencies of 47–63 Hz. The unit is configured at the factory for the standard AC voltage of the purchaser’s country.
  • Page 53 239 series: one for the hot line and the other for the neutral line. Replacement fuses should be as follows: 52 • Changing the AC-Voltage Selection NEW FOCUS, Inc. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 54 64X7 rev E.fm Page 53 Tuesday, April 3, 2001 4:16 PM Figure 8: AC Voltage Fuse Rating Slo-Blo Fuse # AC Voltages and their recom- 100 V AC 2.0 A 239 002 mended fuses 120 V AC 2.0 A 239 002 220 V AC 1.0 A 239 001...
  • Page 55 64X7 rev E.fm Page 54 Tuesday, April 3, 2001 4:16 PM 54 • Changing the AC-Voltage Selection NEW FOCUS, Inc. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 56: Troubleshooting

    64X7 rev E.fm Page 55 Tuesday, April 3, 2001 4:16 PM Troubleshooting Front-Panel Controls Won’t Work If the front-panel controls aren’t working, the laser may be in remote (computer-control) mode. Press the Local button on the front panel to restore local control. If this does not restore control, cycle the power off and then on.

  • Page 57: Scans Won't Start

    The wavelength display will indicate an error code if the controller is unable to perform its proper functions. The following list describes the error codes. Switching the laser controller off and then back on can clear some of these errors. If the error persists, contact New Focus for assistance. Error...

  • Page 58: Calibrating The Laser

    64X7 rev E.fm Page 57 Tuesday, April 3, 2001 4:16 PM Error Description Can’t read laser EEPROM, or there is a conflict E 15 between the controller and the tunable laser cavity. Over-current protection E 20 Interlock error or over-power protection. If you are E 21 page 7 not using the safety interlock feature (...
  • Page 59 64X7 rev E.fm Page 58 Tuesday, April 3, 2001 4:16 PM 58 • Troubleshooting NEW FOCUS, Inc. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 60: Customer Service

    If your laser does require service, repair, or calibration, please call for a Return Authorization Number before shipping the unit to New Focus. There are no user-serviceable parts inside the laser. Unauthorized opening of the laser will void the warranty and may result in burns, electric shock, misalignment of the laser cavity, and/or irreparable damage to the internal components.
  • Page 61 64X7 rev E.fm Page 60 Tuesday, April 3, 2001 4:16 PM 60 • Customer Service NEW FOCUS, Inc. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 62: Appendix A: Physical Specifications

    64X7 rev E.fm Page 61 Tuesday, April 3, 2001 4:16 PM Appendix A: Physical Specifications Figure 9: Front view and 19.05" (483.9) side view of the 18.35" (446.1) Vidia-Discrete 16.80" (426.7) IDIA™ ISCRETE Tunable Laser Source 64X7 Made in USA Addressed Remote 5.20"...
  • Page 63 64X7 rev E.fm Page 62 Tuesday, April 3, 2001 4:16 PM 62 • Appendix A: Physical Specifications NEW FOCUS, Inc. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 64: Appendix B: Rs-232 Connector Wiring

    64X7 rev E.fm Page 63 Tuesday, April 3, 2001 4:16 PM Appendix B: RS-232 Connector Wiring The RS-232 connector on the back of the laser controller is a standard female 9-pin D-connector. The laser controller transmits data on pin 2 and receives data on pin 3 (see below).
  • Page 65 64X7 rev E.fm Page 64 Tuesday, April 3, 2001 4:16 PM 64 • Appendix B: RS-232 Connector Wiring NEW FOCUS, Inc. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 66: Appendix C: Specifications

    64X7 rev E.fm Page 65 Tuesday, April 3, 2001 4:16 PM Appendix C: Specifications Specification Model 6427 Model 6437* Mode-Hop-Free Tuning Range 1520–1570 nm 1565–1625 nm Maximum Output Power > 6 dBm (1520–1570 nm) > 6 dBm Side-Mode Suppression Ratio >...
  • Page 67 64X7 rev E.fm Page 66 Tuesday, April 3, 2001 4:16 PM 66 • Appendix C: Specifications NEW FOCUS, Inc. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 68 Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...

This manual is also suitable for:

Vidia-discrete 6427Vidia-discrete 6437

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