Wavelength References ClarityPlus Operator's Manual

Full c band tunable laser and reference standard, laser locked to molecular absorption lines

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Wavelength References
WRD-19020-1
Operator's Manual
ClarityPlus
Full C Band Tunable Laser and
TM
Reference Standard
Laser Locked to Molecular Absorption Lines
Operating Manual WRD-19020-1
Copyright  Wavelength References, 2019
All Rights Reserved
Wavelength References
rd
1800 SW 3
Street, #140
Corvallis, OR 97333
Voice (541)738-0528
Fax (541)-738-0998
E-mail:
sales@wavelengthreferences.com
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Summary of Contents for Wavelength References ClarityPlus

  • Page 1 Operator’s Manual ClarityPlus Full C Band Tunable Laser and Reference Standard Laser Locked to Molecular Absorption Lines Operating Manual WRD-19020-1 Copyright  Wavelength References, 2019 All Rights Reserved Wavelength References 1800 SW 3 Street, #140 Corvallis, OR 97333 Voice (541)738-0528...
  • Page 2 Wavelength References with shipping charges prepaid. Wavelength References shall pay for the return of the product to Customer if the shipment is within the United States or Canada. Customer shall be responsible for paying all shipping charges, duties, taxes, and any other charges for products returned to other locations.
  • Page 3: Table Of Contents

    WRD-19020-1 Table of Contents Safety and Regulatory Compliance Information ........4 Laser Classification................4 Power Requirements ............... 4 Reference Gas ................. 4 Ordering Information ..................4 Introduction ....................5 Product Overview ................5 Visual and Operational Inspection ..........6 Operating Environment ..............6 Connections ....................
  • Page 4: Safety And Regulatory Compliance Information

    For ordering or questions, please contact us at sales@wavelengthreferences.com or visit our website. The ClarityPlus is currently available as a C-band instrument with standard SCAPC covered output. An FCAPC output is available upon request. CLX – C – FCAPC C Band...
  • Page 5: Introduction

    Wavelength References for information. Product Overview The ClarityPlus contains a Distributed Feedback (DFB) Laser Diode Array (LDA) coupled with an H Molecular Absorption Cell. The laser is capable to stabilizing its output wavelength to any of the H reference lines published in NIST’s Special Publication 260-137 (see section 7.1 and bibliography).
  • Page 6: Visual And Operational Inspection

    Visual and Operational Inspection The ClarityPlus laser is packed in a carton designed to give adequate protection during shipment. If the outside of the shipping carton is damaged, notify your shipping department and carrier immediately. If the external packaging is not damaged carefully remove the contents. The contents should include: ...
  • Page 7: Operating Instructions

    5.1.3 Interlock The ClarityPlus ships with a BNC short on the Remote Interlock input located on the rear panel. If the connection at the Interlock port is opened the laser will automatically disable. If the BNC short is replaced with an interlock circuit (for example, a door sensor), ensure the circuit is closed prior to laser operation.
  • Page 8: Front Panel Operation And Displays

    WRD-19020-1 Front Panel Operation and Displays The user can access the full functionality of the ClarityPlus via the four front panel buttons. Specific functionality is given in the following subsections. Generally, the user can expect the following operation: UP/DOWN: directional buttons will move up and down a list or increase/decrease a displayed value.
  • Page 9 WRD-19020-1 5.2.2.2 Wavelength Lock Settings Display Wavelength: 1530.7859 nm Frequency: 195.84219 THz ↑, ↓, and ENTER or MENU to exit. The Wavelength Lock Settings display first highlights the nanometer resolution of the target wavelength. Press the directional buttons to set the nanometer resolution of the target wavelength. Press and hold for continuous scrolling.
  • Page 10: The Mode Display

    WRD-19020-1 5.2.3 The Mode Display This display will depend on the current laser lock mode. The bottom right displays the lock status (OFF, Locking, Locked). The bottom left remains clear or displays an error message if present (see Section 5.4 for error details). Press ENTER to either enable or disable the laser.
  • Page 11: Front Panel Instrument Settings Display

    Press ENTER to return to the Channel Frequency Mode display. Press MENU to enter the Channel Frequency Mode Settings display. 5.3 Front Panel Instrument Settings Display The ClarityPlus includes access to additional instrument-wide settings. To access, select Instrument Settings from the Main Menu display and press ENTER.
  • Page 12: Rs-232 Settings Display

    WRD-19020-1 5.3.3 RS-232 Settings Display 1. Baud Rate: 115200 2. Tx Term: LF ↑, ↓, and ENTER or MENU to exit. RS-232 settings include the Baud Rate and the Transmit Terminator. When first entering the display, the baud rate is highlighted. Press the directional buttons to update the baud rate to one of five options: 9600, 19200, 38400, 57600 or 115200.
  • Page 13: Serial Interface

    WRD-19020-1 Serial Interface Serial interface to the Clarity laser is provided by means of the RS-232 connector. To use, connect the instrument through a suitable RS-232 session, such as CoolTerm or PuTTY in Windows. Baud rate is initially set to 115200, and the transmitter terminator to LF. The command set is listed below with the following notes on syntax: Bracketed words are optional.
  • Page 14 WRD-19020-1 SYSTem:ERRor[:NEXT]? Queries error from queue (LIFO). Refer to Section 6.2 for list of error codes. <0|1|OFF|ON> [SYSTem:]HEADer Header strings disabled/enabled in query responses. Units, when applicable are also disabled/enabled (e.g. nm or THz). [SYSTem:]HEADer? Queries header string state. Returns OFF or Queries interlock state.
  • Page 15: Error And Event Codes

    WRD-19020-1 Error and Event Codes The eight most recent error and event codes are stored in an array and can be queried with the command “SYSTem:ERRor:[NEXt]?”. Query repeatedly to produce the full array. Error Code Definitions //No event messages "0, "No error” // No error "1, "Empty input buffer”...
  • Page 16: Specifications

    SRM repeatability, shift uncertainty and, where applicable, additional nearby line uncertainty. A line number precedes each reference line. Use this number when selecting a specific line via software command. Note that the ClarityPlus reports wavelength to the nearest 0.1pm. Line # Line ID Vacuum...
  • Page 17 WRD-19020-1 1539.785596 -0.111 1539.78556(4) 1540.431537 -0.102 1540.43150(4) 1541.087334 -0.092 1541.08730(8) 1541.753018 -0.066 1541.75300(4) 1543.114088 0.043 1543.11410(4) 1543.809475 0.059 1543.80949(17) 1544.514783 0.075 1544.51481(4) 1545.23003 0.091 1545.23006(4) 1545.955213 0.084 1545.95524(4) 1546.690342 0.063 1546.69036(4) 1547.435438 0.043 1547.43545(23) 1548.190497 0.022 1548.19050(4) 1548.955547 0.001 1548.95555(4) 1549.730589 -0.024 1549.73058(4)
  • Page 18: Table Of Specifications

    Additional Information Applications A typical application for the ClarityPlus laser is to provide an extremely accurate and stable wavelength standard in the DWDM band. This can be used as a calibration source for an OSA (optical spectrum analyzer) or to verify operation of a wavelength meter.
  • Page 19: Operating Principles

    Laser chip temperature, drive current and SOA current are all controlled in concert while local ambient temperature and the gas cell output are monitored and accounted for. By incorporating the gas cell in its control loops, the ClarityPlus builds on the inherent physical standard asserted by the internal reference gas cell.
  • Page 20: Bibliography

    WRD-19020-1 1. Chemical Purity: We purchase raw gas with a purity assay to assure purity of the raw material. The depth of a gas cell line for a particular gas cell length gives an independent measure of contamination when compared to published results.

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