# Amendment to Solicitation for High Finesse Dual Wavelength Reference Cavity

Canonical: https://abierto.us/opportunities/1333nd25qnb680097

- Solicitation number: 1333ND25QNB680097
- Notice type: Special notice (first published as combined synopsis and solicitation)
- Status: Awarded to Stable Laser Systems Inc.
- Department: Department of Commerce
- Agency: National Institute of Standards and Technology
- Contracting office: Department of Commerce (n-COMMERCEDEPARTMENTOF)
- NAICS: 334516 Analytical Laboratory Instrument Manufacturing
- Product or service code: 6640 Laboratory Equipment and Supplies
- Place of performance: Gaithersburg, Maryland
- County: Montgomery County (FIPS 24031). https://abierto.us/counties/montgomery-county-md-24031
- City: Gaithersburg. https://abierto.us/cities/gaithersburg-md-2431175
- First posted: April 28, 2025
- Last posted: May 20, 2025
- SAM.gov: https://sam.gov/workspace/contract/opp/3697d45ef1234281954af64df7a90add/view

## Description

AMENDMENT TO SOLICITATION HIGH FINESSE DUAL WAVELENGTH REFERENCE CAVITY CLARIFICATION/QUESTIONS AND RESPONSES Questions: Request for more details about the product requirements: The input signal (light): free-space input or fiber input? If free-space input, then the light beam size, collimated or divergent one? For the Photodetectors, any requirements on the speed of the response (bandwidth)? Noise requirement, ….

**Response:** A fiber input to the collimator assembly modules is specified in A.12 of the requirements document. Since the modules must be pre-aligned, the fiber input that is used for alignment should remain attached to the system and be included with it. The contractor is responsible for mode matching the light from the fiber into the optical cavity (or cavities) using a set of lenses and configuring additional optics specified in A.12 and A.13 to generate Pound-Drever-Hall locking signals.

The photodetectors must have a bandwidth sufficient for Pound-Drever-Hall locking to the optical reference cavity, at least 10 MHz. The input current noise for the photodetectors should be < 7 pA/Sqrt(Hz) (which is approximately less than 14 pW/Sqrt(Hz) of noise equivalent power).

## Award on USAspending

- Recipient: Stable Laser Systems Inc. (UEI NDTBJQDB1NG8)
- Contract: 1333ND25PNB680205, purchase order
- Obligated: $95,981.00
- Competition: Competed Under SAP, 2 offers received
- Link: solicitation number 1333ND25QNB680097 equals the FPDS solicitation identifier; awarding office not confirmed (medium confidence)
- Record: https://www.usaspending.gov/award/CONT_AWD_1333ND25PNB680205_1341_-NONE-_-NONE-/


## Publications

- April 28, 2025: Combined synopsis and solicitation, due May 15, 2025 at 12:00 PM EDT. Notice 680ab728e76f431888b6460c87bb334d. https://sam.gov/workspace/contract/opp/680ab728e76f431888b6460c87bb334d/view
- May 20, 2025: Special notice, due May 27, 2025 at 12:00 PM EDT. Notice 0f1e81144ff74f70a42729111570d6b0. https://sam.gov/workspace/contract/opp/0f1e81144ff74f70a42729111570d6b0/view
- May 20, 2025: Special notice, due May 27, 2025 at 12:00 PM EDT. Notice 3697d45ef1234281954af64df7a90add. https://sam.gov/workspace/contract/opp/3697d45ef1234281954af64df7a90add/view

## Points of contact

- Elizabeth Timberlake, elizabeth.timberlake@nist.gov

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Source: SAM.gov Contract Opportunities bulk extract and USAspending.gov award data. Confirm deadlines on SAM.gov before responding. Cite https://abierto.us/opportunities/1333nd25qnb680097.