Custom mid-infrared lenses for laser beam expander

The project aims to build a laser beam expander that operates at two wavelengths: 1621 nm and 3100 nm. The contractor will provide three lenses made of Lightpath BD6 chalcogenide glass and Cleartran Zinc Sulfide, with specific characteristics as shown in the drawings. The lenses will be delivered to NASA GSFC, Code 698, Building 33, Room D406, 8800 Greenbelt Dr., Greenbelt, MD 20771. The period of performance is 16 weeks. • The contractor shall provide Lens 1, Lens 2, and Lens 3 with specific materials and quantities. • The contractor shall deliver the lenses to the specified location. • The period of performance is 16 weeks.