Breadboard testing of a phase-conjugate engine with an interferometric wave-front sensor and a microelectromechanical systems-based spatial light modulator |
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Authors: | Baker Kevin L Stappaerts Eddy A Gavel Don Wilks Scott C Tucker Jack Silva Dennis A Olsen Jeff Olivier Scot S Young Peter E Kartz Mike W Flath Laurence M Krulevitch Peter Crawford Jackie Azucena Oscar |
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Affiliation: | Lawrence Livermore National Laboratory, Livermore, California, USA. |
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Abstract: | Laboratory breadboard results of a high-speed adaptive-optics system are presented. The wave-front sensor for the adaptive-optics system is based on a quadrature interferometer, which directly measures the turbulence-induced phase aberrations. The spatial light modulator used in the phase-conjugate engine was a microelectromechanical systems-based piston-only correction device with 1024 actuators. Laboratory experiments were conducted with this system utilizing Kolmogorov phase screens to simulate atmospheric phase distortions. The adaptive-optics system achieved correction speeds in excess of 800 Hz and Strehl ratios greater than 0.5 with the Kolmogorov phase screens. |
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