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Title: Nonlinear response studies and corrections for a liquid crystal spatial light modulator
Authors: Banyal, R. K
Prasad, B. R
Keywords: Liquid crystal spatial light modulator;holographic data storage;optical\break image processing
Issue Date: Jun-2010
Publisher: Indian Academy of Sciences
Citation: Pramana, Vol. 74, No. 6, pp. 961-971
Abstract: The nonlinear response of light transmission characteristics of a liquid crystal (LC) spatial light modulator (SLM) is studied. The results show that the device exhibits a wide range of variations with different control parameters and input settings. Experiments were performed to obtain intensity modulation that is best described by either power-law or sigmoidal functions. Based on the inverse transformation, an appropriate pre-processing scheme for electrically addressed input gray-scale images, particularly important in several optical processing and imaging applications, is suggested. Further, the necessity to compensate the SLM image nonlinearities in a volume holographic data storage and retrieval system is demonstrated.
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Appears in Collections:IIAP Publications

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