To investigate the performance of a reflecting 256 pixel×256 pixels phase-only liquid crystal spatial light modulator(LC-SLM) and to improve the ability of wavefront correction,the Twyman-Green interferometer and the phase-shift point-diffraction interferometer are set-up to measure the phase-shift characteristic and the static distortion of this SLM individually,and then use the SLM to compensate the distortion from itself.Experimental results show that the peak-to-valley(PV) value and the root mean square...
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