An adaptive wavefront control system using a high-resolution liquid crystal spatial light modulator

Hongxin Huang; Takashi Inoue; Tsutomu Hara

doi:10.1117/12.576491

23 December 2004 An adaptive wavefront control system using a high-resolution liquid crystal spatial light modulator

Hongxin Huang, Takashi Inoue, Tsutomu Hara

Author Affiliations +

Proceedings Volume 5639, Adaptive Optics and Applications III; (2004) https://doi.org/10.1117/12.576491
Event: Photonics Asia, 2004, Beijing, China

Abstract

We have developed a tabletop adaptive optics wavefront control system used to correct dynamic distortions. The system uses a Shack-Hartmann sensor constructed by using a lenslet array and a high-speed CMOS camera to measure distortion, a high-resolution liquid crystal spatial light modulator to correct distortion, and a personal computer to execute feedback control. A correction refresh rate of 50 cycles per second was achieved as the result of the high-speed vision system. The temporal characteristic measurement was based on the response to periodic signals of patterns, and the measured bandwidth was about 7Hz. We also describe the optical configuration and experimental results of a performance evaluation.

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Hongxin Huang, Takashi Inoue, and Tsutomu Hara "An adaptive wavefront control system using a high-resolution liquid crystal spatial light modulator", Proc. SPIE 5639, Adaptive Optics and Applications III, (23 December 2004); https://doi.org/10.1117/12.576491

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