The National Institute of Standards and Technology (NIST) is seeking sources for a multi-channel laser interferometer system for ultra-high vacuum optomechanical sensing, with a potential sole source award to SmarAct Inc. The system must include a three-channel Michelson interferometer controller, a breakout box, and three ultra-high-vacuum-compatible focusing sensor heads, providing picometer-class displacement resolution with a bandwidth of at least 2.5 MHz. The sensor heads must be miniature, all-optical, and rated to a base pressure of 1×10?¹¹ mbar, with a stabilized NIST-traceable laser source operating in the 1510–1560 nm range. No specific budget amount, performance location, or submission timeline is mentioned in the description. Interested parties are invited to respond with company details, product specifications, and pricing information to help NIST determine its acquisition strategy.