High-Gamma Spatial Light Modulator For Nonlinear Optical Processing

1986 ◽  
Author(s):  
C. Warde ◽  
H. Lamela-Rivera ◽  
H. K. Liu
Keyword(s):  
Spatial Light Modulator ◽  
Nonlinear Optical ◽  
Optical Processing ◽  
Light Modulator ◽  
High Gamma

Pseudo-Color Coded Optical System Based on the Spatial Light Modulator and Charge-Coupled Device

2012 ◽  
Author(s):  
S. N. Zhao ◽  
H. Chang ◽  
J. Wei ◽  
Z. Wei
Keyword(s):  
Real Time ◽  
Optical System ◽  
Spatial Light Modulator ◽  
Processing System ◽  
Optical Processing ◽  
Gray Scale ◽  
Light Modulator ◽  
Time Modulation ◽  
Gray Scale Image ◽  
Pseudo Color

A new pseudo-color coded optical system based on the liquid crystal spatial light modulator (LC-SLM) and a digital camera (CCD) is proposed. The SLM is used to replace the holographic grating with gray-scale image information, a gray-scale image in real-time modulation methods is proposed by synthesizing phase hologram and Ronchi grating, combined with the 4f coherent optical processing system and spatial filtering. For the high resolution gray image processed with existing digital pseudo-color method, the color sensitivity is low, algorithm is very complex. For traditional optical pseudo-color method, the gray scale image needs chemical pretreatment. The process is complex and time-consuming, and the real-time modulation could not be achieved. Our new method has enhanced the flexibility and adaptability of the optical pseudo-color, and give full play to the high sensitivity, high-capacity, rich colors and other features of the optical processing mode. At the same time, it overcomes the disadvantages of pure optical system which could not perform real-time processing. Therefore, it can be widely used in the field of remote sensing, biomedical, environmental monitoring, public security and criminal investigation, etc.

Application of a magnetooptic spatial light modulator to white-light optical processing

1984 ◽  
Vol 23 (22) ◽  
pp. 4100 ◽  
Author(s):  
Francis T. S. Yu ◽  
Xiaojing Lu ◽  
Miaofu Cao
Keyword(s):  
White Light ◽  
Spatial Light Modulator ◽  
Optical Processing ◽  
Light Modulator

An Asynchronous Image Subtracting Optically Addressed Spatial Light Modulator

1993 ◽  
Vol 297 ◽  
Author(s):  
Pierre R. Barbier ◽  
Garret Moddel
Keyword(s):  
Liquid Crystal ◽  
Spatial Light Modulator ◽  
Experimental Results ◽  
Ferroelectric Liquid Crystal ◽  
Optical Processing ◽  
Light Modulator ◽  
Image Subtraction ◽  
Current Voltage ◽  
Current Voltage Characteristics

The operation of image-subtraction is useful in optical processing. We report the first asynchronous image-subtracting optically addressed spatial light modulator incorporating a ferroelectric liquid crystal and a color-sensitive a-Si:H p-i-n-i-p photodetector. We present experimental results characterizing the sensitivity of the photodetector current-voltage characteristics to wavelength, and demonstrate image subtraction. Finally, we propose a model that explains the operation of the image-subtracting OASLM.

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