Monolithic all-semiconductor optically addressed spatial light modulator based on low-photoconductive semiconductors
US6025950A · kind A · utility
25Cited by
9References
12Claims
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Key dates
| Filing date | Jul 27, 1998 |
| Grant date | Feb 15, 2000 |
| Priority date | — |
| Expiry date | Jul 27, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2225/25
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optically addressed spatial light modulator (OASLM), and an optical pattern processor employing the same. An embodiment of the OASLM includes a transparent electrode; a buffer layer; a detector region; and a modulator region, wherein the detector and modulator regions are optically isolated and resist electron movement therebetween. In one embodiment, the detector region includes a photoconductive semiconductor region with a higher band gap than the modulator region and the modulator region comprises a low-photoconductive semiconductor material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.