The Department of Defense (DOD) is seeking innovative solutions for the development of a room temperature PbS/PbSe photoconductive detector aimed at detecting chemical and biological agents in the mid-infrared wavelength region (2 to 4.5 µm). The objective is to create a lightweight, cost-effective sensor that operates without external cooling, exhibits high detectivity (D* of 10^10 Jones or better), and minimizes non-linear response to MWIR radiation, thereby enhancing its utility in spectroscopic applications. This initiative is critical for the chemical and biological defense community, as it addresses the need for effective monitoring tools in field environments, particularly for first responders and the manufacturing sector. Interested parties should note that the solicitation is currently closed, with the application due date having been set for October 23, 2024, and further details can be found at the DOD SBIR website.