The Department of Commerce, specifically the National Institute of Standards and Technology (NIST), is conducting market research through a Sources Sought Notice for a tabletop pulsed vacuum ultraviolet (VUV) light source. This light source, with a center wavelength between 110 nm and 210 nm, is intended for integration into an atom probe tomography (APT) instrument to enhance nanoscale metrology techniques critical for domestic semiconductor manufacturing processes. Interested vendors are invited to provide detailed information about their capabilities and products that meet the specified technical requirements, including pulse energy, duration, and stability, with responses due to the primary contact, Tracy Retterer, at tracy.retterer@nist.gov. This notice serves solely for market research purposes and does not constitute a commitment to issue a solicitation or award a contract.