Optical Addressing of High-Speed Spatial Light Modulators with Hydrogenated Amorphous Silicon

1988 ◽  
Vol 118 ◽  
Author(s):  
G. Moddel ◽  
C. T. Kuo ◽  
K. M. Johnson ◽  
W. Li
Keyword(s):  
Amorphous Silicon ◽  
High Speed ◽  
Hydrogenated Amorphous Silicon ◽  
Spatial Light Modulators ◽  
Light Modulators ◽  
Hydrogenated Amorphous

Amorphous Silicon-Carbon Thin Film P-I-N Structures for Liquid-Crystal Spatial Light Modulators

1996 ◽  
Vol 420 ◽  
Author(s):  
N. A. Feoktistov ◽  
N. L. Ivanova ◽  
L. E. Morozova ◽  
Yu. A. Nikulin ◽  
A. P. Onokhov ◽  
...  
Keyword(s):  
Light Intensity ◽  
Amorphous Silicon ◽  
Diffraction Efficiency ◽  
Carbon Films ◽  
Spatial Light Modulators ◽  
Frequency Range ◽  
Light Modulators ◽  
Operation Speed ◽  
Silicon Carbon ◽  
Hydrogenated Amorphous

AbstractPhotoaddressed spatial light modulators (PSLM) based on nematic liquid crystals using hydrogenated amorphous silicon-carbon films (a-Si1-xCx,:H) and p-i-n structures as photosensitive layers are designed and studied. It is shown that an application of a-Si1-xCx:H p-i-n diodes greatly improved the operation speed of a PSLM, increased the film transparency and decreased the absorption of the red readout light. As a result, the readout light intensity could become ≈ 20 times larger. The maximum diffraction efficiency of the PSLM was achieved for a write-in light intensity of 40μLW/cm2, with a resolution (FWHM) of the diffraction efficiency of 54 mm-1. The optical response of the PSLM was observed in the frequency range from 1 Hz to 100 Hz.

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