A three-terminal spatial light modulator optically addressed by an a-Si: H photosensor Academic Article uri icon


  • Abstract We have developed a new, three-terminal optically addressed spatial light modulator (OASLM) which utilizes a hydrogenated amorphous silicon (a-Si: H) pin photodiode as the photosensor and a ferroelectric liquid crystal (FLC) as the modulator. A patterned metal layer deposited between the a-Si: H and FLC forms the third terminal. This structure allows for dc operation and has the potential for a variable threshold response to an optical input signal.

publication date

  • January 1, 1989