Shortwave adaptive optical systems are required for ground-to-space transfer of laser power. These systems require high temporal bandwidth wavefront correction elements with between 1,000 and 10,000 degrees of freedom. We have developed a prototype segmented mirror whose wavefront correction capability can match these requirements. Details of the design and suggestions of how this technology could impact the NGT design are given.
N. A. Massie,
"Experiments With High Bandwidth Segmented Mirrors", Proc. SPIE 0332, Advanced Technology Optical Telescopes I, (4 November 1982); doi: 10.1117/12.933542; https://doi.org/10.1117/12.933542