NASA's National Aeronautics and Space Administration (NASA) is seeking to procure a set of specialized photolithographic polarizers essential for laboratory tests of optical systems at the Goddard Space Flight Center. The procurement involves four custom polarizers, each featuring 1 micron wide wires separated by 1 micron gaps, double-sided, and mounted on a ring with specific dimensions and directional markings. These components are critical for the PRIMA project, which emphasizes precise specifications to support scientific testing. Interested organizations must submit their capabilities and qualifications in writing by 11:59 p.m. Eastern Standard Time on July 21, 2025, to be considered for this sole source contract, which is intended for CelTec Terahertz Technology Limited. For further inquiries, contact Tiffany Neal at TIFFANY.NEAL@NASA.GOV.