The Department of Defense, specifically the Department of the Air Force, is seeking a sole-source procurement for a fiber-coupled 553 nm laser system, as outlined in presolicitation notice FA875125Q0061. The system must meet stringent specifications, including a center frequency of 541.433 THz, a mode hop-free tuning range of over 30 GHz, and various operational capabilities to withstand environmental conditions, making it critical for advanced research and operational applications. The anticipated award date is on or before April 14, 2025, and interested parties may submit capability statements to Brooke McDonald at brooke.mcdonald@us.af.mil by the response date of March 31, 2025, although no contract will be awarded based on this notice alone.