Real-time liquid-crystal atmosphere turbulence simulator with graphic processing unit

被引：10
作者：
Hu, Lifa [1 ]
Xuan, Li [1 ]
Li, Dayu [1 ]
Cao, Zhaoliang [1 ]
Mu, Quanquan [1 ]
Liu, Yonggang [1 ]
Peng, Zenghui [1 ]
Lu, Xinhai [1 ]
机构：
[1] Changchun Inst Opt Fine Mech & Phys, Changchun 130033, Jilin, Peoples R China
来源：
OPTICS EXPRESS | 2009年 / 17卷 / 09期
关键词：
WAVE-FRONT GENERATION; SPATIAL LIGHT MODULATORS; ADAPTIVE OPTICS SYSTEMS; PHASE-SCREENS;
D O I：
10.1364/OE.17.007259
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
To generate time-evolving atmosphere turbulence in real time, a phase-generating method for our liquid-crystal (LC) atmosphere turbulence simulator (ATS) is derived based on the Fourier series (FS) method. A real matrix expression for generating turbulence phases is given and calculated with a graphic processing unit (GPU), the GeForce 8800 Ultra. A liquid crystal on silicon (LCOS) with 256x256 pixels is used as the turbulence simulator. The total time to generate a turbulence phase is about 7.8 ms for calculation and readout with the GPU. A parallel processing method of calculating and sending a picture to the LCOS is used to improve the simulating speed of our LC ATS. Therefore, the real-time turbulence phase-generation frequency of our LC ATS is up to 128 Hz. To our knowledge, it is the highest speed used to generate a turbulence phase in real time. (C) 2009 Optical Society of America
引用
收藏
页码：7259 / 7268
页数：10
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