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.
