This is a market research Sources Sought notice, not a solicitation, from NIST seeking information on vendors capable of providing a narrow-linewidth fiber laser. The government will use responses to determine if a small business set-aside opportunity exists and to finalize its acquisition method. No budget amount or performance location is specified in the description. The product must be manufactured in the U.S., and respondents must indicate the country of manufacture. Capability statements are due by the date and time posted in the notice, with no quotes accepted at this time.