Performances of liquid crystal spatial light modulator (LC-SLM) as a wave-front corrector for atmospheric turbulence compensation

2007 ◽  
Author(s):  
Dongmei Cai ◽  
Ning Ling ◽  
Wenhan Jiang
Keyword(s):  
Liquid Crystal ◽  
Wave Front ◽  
Atmospheric Turbulence ◽  
Spatial Light Modulator ◽  
Light Modulator

A method of generating atmospheric turbulence with a liquid crystal spatial light modulator

2010 ◽  
Author(s):  
Christopher C. Wilcox ◽  
Freddie Santiago ◽  
Ty Martinez ◽  
Jonathan R. Andrews ◽  
Sergio R. Restaino ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Atmospheric Turbulence ◽  
Spatial Light Modulator ◽  
Light Modulator

Wave Front Correction and Measurement by Using a Liquid Crystal Spatial Light Modulator

2010 ◽  
Vol 437 ◽  
pp. 319-323
Author(s):  
Jian Zhang ◽  
Li Ying Wu ◽  
Li Min Zou
Keyword(s):  
Liquid Crystal ◽  
Wave Front ◽  
Spatial Light Modulator ◽  
Incident Beam ◽  
Liquid Crystal Cell ◽  
Distortion Correction ◽  
Light Modulator ◽  
Voltage Change ◽  
The Relationship ◽  
After Error

To correct wave front distortion, a phased only Liquid Crystal Spatial Light Modulator (LCSLM) is used. LCSLM can modulate the phase of the incident beam by changing the electric field applied to the transparent electrodes of a liquid crystal cell. The voltage change causes the refractive index of the liquid crystal change, so a phase shift produces. The distortion of a wave front can be measured by using a wave front interferometer. Since each pixel of SLM may be addressed and controlled independently, so proper voltage is supplied to each pixel to compensate the phase corresponding to the distortion. Before wave front correction, the LCSLM is tested and corrected by employing a Twyman-Green interferometer, which shows the relationship between the applied voltage and the phase value of each pixel. Experiment result shows that after error compensation of LCSLM, the wave front distortion correction accuracy reaches 0.06 λ.

Performance of Liquid-Crystal Spatial Light Modulator Using for Wave-Front Correction

2009 ◽  
Vol 29 (2) ◽  
pp. 285-291
Author(s):  
蔡冬梅 Cai Dongmei ◽  
姚军 Yao Jun ◽  
姜文汉 Jiang Wenhan
Keyword(s):  
Liquid Crystal ◽  
Wave Front ◽  
Spatial Light Modulator ◽  
Light Modulator

Atmospheric Turbulence Generator Using a Liquid Crystal Spatial Light Modulator

2007 ◽  
Author(s):  
Christopher C. Wilcox ◽  
Jonathan R. Andrews ◽  
Sergio R. Restaino ◽  
Ty Martinez ◽  
Scott W. Teare
Keyword(s):  
Liquid Crystal ◽  
Atmospheric Turbulence ◽  
Spatial Light Modulator ◽  
Light Modulator ◽  
Turbulence Generator

Characteristics of a 128??×??128 liquid-crystal spatial light modulator for wave-front generation

1998 ◽  
Vol 23 (12) ◽  
pp. 969 ◽  
Author(s):  
Doo Jin Cho ◽  
Samuel T. Thurman ◽  
J. T. Donner ◽  
G. Michael Morris
Keyword(s):  
Liquid Crystal ◽  
Wave Front ◽  
Spatial Light Modulator ◽  
Light Modulator
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