Abstract

Holography technology has been applied to analogue optical processing, three-dimensional display and optical storage. Their dynamic applications, however, have been limited by the lack of real-time hologram. Rewritable hologram materials, such as photochromic and photorefractive materials¹, have not sufficient speed and sensitivity for real-time operation. Real-time hologram would be very important to realize flexible optical processing systems for moving images. We have developed a high-resolution optically-addressable spatial light modulator that utilizes a ferroelectric liquid crystal and an amorphous-silicon photoconductor. We have studied the diffraction characteristics from the interference pattern recorded on the SLM and have attained the real-time construction and reconstruction of a Fresnel hologram using the SLM.

© 1990 Optical Society of America