Optical Addressing of High-Speed Spatial Light Modulators with Hydrogenated Amorphous Silicon


We demonstrate the operation of a high-speed optically addressed spatial light modulator utilizing a hydrogenated amorphous silicon photosensor and a ferroelectric liquid crystal modulator. The device has numerous optical parallel processing and interconnect applications. It combines desirable resolution, switching speed, size, and contrast characteristics. The devices are driven by a square-wave voltage, such that read and write operations take place under reverse bias, and an erase operation occurs under forward bias. The capacitance associated with the photosensor plays a critical role in the device performance.

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Moddel, G., Kuo, C.T., Johnson, K.M. et al. Optical Addressing of High-Speed Spatial Light Modulators with Hydrogenated Amorphous Silicon. MRS Online Proceedings Library 118, 405 (1988). https://doi.org/10.1557/PROC-118-405

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