26 January 2009 Adaptive aberration compensation system using a high-resolution liquid crystal on silicon spatial light phase modulator
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Abstract
We have developed a liquid-crystal-on-silicon spatial light modulator (LCOS-SLM) and examined its performance capability as a wavefront corrector with an adaptive optics (AO) test system. The LCOS-SLM has a high light-utilization efficiency so that it is suitable for AO in ophthalmic instruments. Experimental results with a static phase object showed nearly diffraction-limited performance. The root-mean-square (RMS) value of residual wavefront error was reduced to 0.06 wavelength from 2.09 wavelength. The capability for dynamic aberration correction was also examined. The timevarying aberration was created by rotating the same phase object. While the RMS wavefront error became slightly larger, a nearly diffraction-limited performance could be confirmed as same as in the static aberration correction. Effective stroke and refraction power of the LCOS-SLM were also discussed theoretically. The estimated effective stroke and refraction power were 40 microns and 2.5D for a beam of 8-mm diameter on the LCOS-SLM, respectively.
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Hongxin Huang, Hongxin Huang, Takashi Inoue, Takashi Inoue, Tsutomu Hara, Tsutomu Hara, } "Adaptive aberration compensation system using a high-resolution liquid crystal on silicon spatial light phase modulator", Proc. SPIE 7156, 2008 International Conference on Optical Instruments and Technology: Optical Systems and Optoelectronic Instruments, 71560F (26 January 2009); doi: 10.1117/12.816955; https://doi.org/10.1117/12.816955
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