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

Lifa Hu | Zendy; Li Xuan | Zendy; Dayu Li | Zendy; Zhaoliang Cao | Zendy; Quanquan Mu | Zendy; Yonggang Liu | Zendy; Zenghui Peng | Zendy; Xinhai Lu | Zendy

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

Author(s) -

Lifa Hu,

Li Xuan,

Dayu Li,

Zhaoliang Cao,

Quanquan Mu,

Yonggang Liu,

Zenghui Peng,

Xinhai Lu

Publication year - 2009

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.17.007259

Subject(s) - turbulence , liquid crystal on silicon , liquid crystal , atmosphere (unit) , phase (matter) , optics , liquid crystal display , computer science , physics , meteorology , quantum mechanics

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.

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