Abstract

All optically addressed spatial light modulators (SLM) contain the functionalities of detection of input light pattern and corresponding modulation of the readout beam. These two functions are often performed by two physically distinct parts, although in some cases the same material or structure performs these two functions. The isolation between these two functionalities of an SLM is an important feature, which can be achieved using several different approaches: (1) wavelength seperation between read and write signals, (2) seperation along the direction perpendicular to the device plane, (3) seperation along a direction within the device plane.

© 1988 Optical Society of America