Nonlinear response studies and corrections for a liquid crystal spatial light modulator

Pramana

B Raghavendra Prasad¹  Ravinder Kumar Banyal1¹ 

[1] Indian Institute of Astrophysics, Bangalore 560 034, India$$

关键词: Liquid crystal spatial light modulator;    holographic data storage;    optical image processing.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

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.

【 授权许可】

Unknown