The Department of Commerce, specifically the National Institute of Standards and Technology (NIST), has issued a Sources Sought Notice to identify potential sources for a visible wavelength wavemeter, which is crucial for research in nanophotonic and optomechanical devices. The wavemeter must cover a wavelength range from 400 nm to 1100 nm and meet stringent specifications, including an absolute accuracy of ±200 MHz, a measurement resolution of 5 MHz or better, and a data acquisition speed of at least 500 Hz, along with a multi-channel switch for multiplexing four lasers with rapid channel switching times under 50 milliseconds. This procurement reflects NIST's commitment to advancing photonics research, and interested vendors are encouraged to submit detailed information about their capabilities and products, ensuring compliance with the outlined specifications. Responses should be directed to Forest Crumpler at forest.crumpler@nist.gov, and the deadline for submissions aligns with federal procurement regulations.