4.03b SOW.pdf
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- Attached to
- USNO MOPA LASERS Federal contract opportunity
- Solicitation number
- N0018924Q0117
About this file
This statement of work and related federal contract opportunity describe a solicitation by the United States Naval Observatory for the procurement of two 689.45nm master oscillator power amplifier configured laser systems. The laser systems are required to support the development of an atomic clock technology using optical spectroscopy of strontium atoms, with specifications including a center wavelength of 689.45nm, minimum output power levels, linewidth parameters, modulation capabilities and associated control hardware. Offerors are required to provide a final report upon completion of delivering the laser systems and locking electronics. The period of performance is nine months from award date at the Naval Observatory location in Washington, D.C. The solicitation will be issued on or around January 31, 2024 via request for quotation number N0018924Q117 on the SAM.gov website as a firm-fixed-price sole source contract to Toptica Photonics, Inc, under the authority of FAR 6.302-1 for one responsible source.
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Other files for this federal contract opportunity
| File | Type | Posted |
|---|---|---|
| 4.03a Justification for Sole Source_Redacted.pdf | ||
| 4.03c FAR and DFARS Provisions and Clauses.pdf | ||
| 4.02 Combined Synopsis Solicitation.pdf |
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Text version
STATEMENT OF WORK
689nm MOPA Lasers for Narrow-Line Cooling of Strontium
Clock Development Division, Precise Time Department United States Naval Observatory
BACKGROUND:
Under Joint Chiefs of Staff instruction CJCSI 6130.01, the United States Naval Observatory (USNO) is directed to supply the Master Clock (MC) for the United States Department of Defense (DoD) at a level that meets or exceeds mission requirements. The USNO serves as the official source of time for the DoD and a standard of time derived from the USNO Master Clock for the entire United States. Network Time Protocol (NTP) servers, web-based time synchronization, Global Navigation Satellite Service (GNSS) timing products and services, Two- Way Satellite Time Transfer, and Astrometry/Geodetic calculations originate at the USNO.
Within the Precise Time Department, the Clock Development Division is investigating atomic clock technology using optical spectroscopy in strontium atoms. For long interaction times, laser cooling techniques are used to produce a cold ensemble of atoms. To achieve this, strict constraints must be placed on the properties of the lasers involved in this process. This procurement targets the lasers needed for the final stage of laser cooling, where two lasers are needed at 689.45nm. Further, large optical power is needed for high transfer efficiency from the first stage to the final stage of laser cooling and trapping. Finally, these lasers must have the ability to be narrowed to a linewidth much smaller than the atomic natural linewidth.
SCOPE:
The USNO seeks to procure two (2) 689.45nm (nanometer) laser systems based on the Master Oscillator Power Amplifier (MOPA) design. The MOPA configuration consists of a tunable external cavity diode laser (ECDL) to serve as a seed for a Tapered Amplifier (TA).
Additionally, the USNO seeks two (2) fast analog linewidth control modules as a method to narrow the linewidth of the lasers.
Finally, the USNO seeks one (1) laser controller to control both (2) MOPA laser systems.
REQUIREMENTS:
1. Two (2) 689nm MOPA lasers with the following specifications:
• Complete system laser system with high power output using the MOPA design.
• Master laser (ECDL) including laser diode, mount, optics, and thermal management.
• Tapered amplifier chip with mount, beam shaping optics (to correct astigmatic output), and thermal management
• Center wavelength 689.45nm.
• Course tuning 689nm-690nm.
• Free-space output power > 225mW or fiber coupled output power > 125mW.
• Free running linewidth < 100kHz.
• Mode-hope free tuning range > 25GHz.
• Resonance free piezo modulation up to 4kHz.
• High bandwidth (> 10MHz) current modulation for both master and amplifier, with diode protection.
• Optical Isolator 60dB for protection of master.
• Probe Beam output (derived from the ECDL) with optionally available compact and stable fiber coupling.
• Fiber Coupler Unit, FC/APC for direct attachment onto TA output.
• FC/APC Patch cord fibers mode matched for each fiber coupler unit.
• Output polarization linear aligned to the slow axis of the fiber.
2. Two (2) linewidth reduction methods with the following specifications:
• Special resonator for narrower free running linewidth.
• Fast analog linewidth control module to pair with controller for diode lasers.
o For linewidth reduction, high-bandwidth frequency locking or phase-locking to an external laser reference.
o PID regulator with < 10ns signal delay with three I stages and two D stages.
o Remote control via TCP/IP: PC-GUI or command interface.
o Analog mixer for phase detection.
o Two feedback channels for fast current control and for drift cancellation.
3. Single (1) laser controller for two laser systems: low noise and drift, high resolution current, temperature and piezo drivers.
• Two (2) 5A current controllers used for control of the ECDLs in the MOPA configuration.
• Two (2) 5A current controllers allows for running TAs in MOPA configuration.
• Must interface with the fast analog control module to narrow linewidth of the laser systems.
• Flexible control by integrated CPU & FPGAs for intelligent features.
• Graphical PC user interface as well as command based (TCP/IP) interface for remote control.
FACILITIES, EQUIPMENT, AND TRAVEL:
Planning and support for the completion of these tasks will be coordinated with the technical POC listed below for the USNO.
REPORTS TO USNO:
Contractor shall provide a final report regarding the completion and status of two (2) 689nm MOPA configuration laser systems and associated locking electronics.
Dissemination control of output products such as documents: The output products of the study shall be considered “DISTRIBUTION D: DOD AND DOD CONTRACTORS ONLY,” and shall not be further disseminated without written permission of USNO. Contractor shall comply with all relevant USNO, Navy, DoD dissemination, security and information assurance rules.
PERIOD OF PERFORMANCE:
The period of performance is nine (9) months or sooner for the delivery of components from award date.
PLACE OF PERFORMANCE:
US Naval Observatory 3450 Massachusetts Ave NW, Washington, DC 20392
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