This is a market research notice for a narrow linewidth, fiber-coupled, continuously tunable near-infrared laser (~1.5 to 1.6 um) with specific Pound-Drever-Hall locking electronics, required for a next-generation optical pressure standard at NIST. The government intends to issue a sole source award to Toptica Photonics Inc. of Pittsford, New York, if no other capable sources are identified through this process. There is no specified budget or performance timeline mentioned in the notice. Respondents must provide detailed capability information without proprietary data. This notice is for research purposes only and does not constitute a formal solicitation.