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12 January 1993 Random phase errors and pseudorandom phase modulation of deformable mirror spatial light modulators
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Abstract
Piston-only spatial light modulators, such as the flexure-beam deformable mirror device, hold great promise for real-time optical processors because of their ability to accurately match the phase of arbitrary laser images. Non-ideal devices may have uncontrolled phase errors which can limit performance. A statistical analysis has been developed which models the effect of random piston and tilt errors on the diffraction pattern of phase-only SLMs. A slight modification of these equations describes the performance of these SLMs in the phase-only correlator and the phase-only correlator modulated by pseudo-random sequences. Results on correlator diffraction efficiency versus amount of phase error are presented. For the specific case of a binary phase-only matched filter a diffraction efficiency of 40.5% is found.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Robert W. Cohn "Random phase errors and pseudorandom phase modulation of deformable mirror spatial light modulators", Proc. SPIE 1772, Optical Information Processing Systems and Architectures IV, (12 January 1993); https://doi.org/10.1117/12.140923
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