Open- and closed-loop aberration correction by use of a quadrature interferometric wave-front sensor |
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Authors: | Baker Kevin L Stappaerts Eddy A Wilks Scott C Young Peter E Gavel Donald T Tucker Jack W Silva Dennis A Olivier Scot S |
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Institution: | Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 74550-9234, USA. baker7@llnl.gov |
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Abstract: | Experimental results are presented for an adaptive optics system based on a quadrature Twyman-Green interferometric wave-front sensor. The system uses a circularly polarized reference beam to form two interferograms with a pi/2 phase shift. The experiments conducted used Kolmogorov phase screens to simulate atmospheric phase distortions. Strehl ratio improvements by a factor of 8, to an absolute value of 0.45, are demonstrated. |
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