Experimental results are presented on the performance of an IR multidither adaptive-optics system with rotating, extended targets. A nine-zone deformable mirror with superimposed dithers was employed at 10.6 μm with spherical metallic targets of varying roughness and diameter. The results presented include openloop discriminants, target speckle-noise spectra, and closed-loop beam quality obtained as functions of target and system parameters. Experimental results are interpreted using a simplified model for the adaptiveoptics system and target.
© 1979 Optical Society of America
G. E. Palma and H. R. Garcia, "Experiments with an IR multidither deformable-mirror COAT system," Appl. Opt. 18, 3057-3063 (1979)