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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 9 — Apr. 27, 2009
  • pp: 7259–7268

Optics InfoBase > Optics Express > Volume 17 > Issue 9 > Page 7259

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

Lifa Hu, Li Xuan, Dayu Li, Zhaoliang Cao, Quanquan Mu, Yonggang Liu, Zenghui Peng, and Xinghai Lu  »View Author Affiliations


Optics Express, Vol. 17, Issue 9, pp. 7259-7268 (2009)
http://dx.doi.org/10.1364/OE.17.007259


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Abstract

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 256×256 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.

© 2009 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(010.1330) Atmospheric and oceanic optics : Atmospheric turbulence
(160.3710) Materials : Liquid crystals
(230.6120) Optical devices : Spatial light modulators

ToC Category:
Atmospheric and Oceanic Optics

History
Original Manuscript: December 16, 2008
Revised Manuscript: February 23, 2009
Manuscript Accepted: March 4, 2009
Published: April 17, 2009

Citation
Lifa Hu, Li Xuan, Dayu Li, Zhaoliang Cao, Quanquan Mu, Yonggang Liu, Zenghui Peng, and Xinghai Lu, "Real-time liquid-crystal atmosphere turbulence simulator with graphic processing unit," Opt. Express 17, 7259-7268 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-9-7259


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