SLMS athermal technology for high-quality wavefront control

The Air Force is interested in high stiffness, lightweight technologies for beam control systems. The corrected system wavefront error can be minimized using low figure error/surface finish, low print-through, high-stiffness, Silicon Lightweight Mirror Systems (SLMS TM ) technology with high-reflectivity, very low absorption (VLA) coatings. We report on the fabrication of an F/1.0 mirror/mount weighing 26 pounds and with a first mode in excess of 1 kHz.