Abstract

The fabrication and performance of an optically addressed spatial light modulator (OASLM) based on nematic liquid crystal and nanodimensional amorphous arsenic trisulfide ($\mathrm{a}\text{-}{\mathrm{As}}_2{\mathrm{S}}_3$) chalcogenide glassy films are described. The photoconductive $\mathrm{a}\text{-}{\mathrm{As}}_2{\mathrm{S}}_3$ layers are used both as photoalignment material and as a photosensor. The use of the OASLM as a color converter is demonstrated in the transmission mode. The phase retardation dynamic range is over $3\pi$. Diffraction efficiency measurements show a high resolution ($150\mathrm{lp}/\mathrm{mm}$ at 50% MTF). A wide variety of materials from the chalcogenide glass (ChG) family are useful for simple fabrication of high-resolution OASLMs depending on the desired wavelength.

© 2014 Optical Society of America

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