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Proceedings Paper

Performance Limitations Of The Microchannel Spatial Light Modulator
Author(s): Cardinal Warde
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Paper Abstract

The Microchannel Spatial Light Modulator (MSLM) is a versatile, highly-sensitive and optically-addressed modulator that is well suited for low-light-level, real time, optical information processing. It consists of a photocathode, a microchannel plate, a planar acceleration grid, and an electro-optic plate in proximity focus. The image processing operations that can be achieved with the MSLM include contrast reversal, contrast enhancement, edge enhancement, image addition and subtraction, analog and digital intensity level thresholding, and binary-level logic operations such as AND, OR, EXCLUSIVE OR and NOR. Recent prototype MSLMs have exhibited a half-wave exposure sensitivity of 2.2nJ/cm2, an optical information storage time of more than two months, and a framing rate of 20 Hz with full modulation depth (100 Hz with 20% modulation depth). The materials and device parameters that limit the ultimate performance of the modulator are discussed.

Paper Details

Date Published: 15 May 1981
PDF: 9 pages
Proc. SPIE 0236, 1980 European Conf on Optical Systems and Applications, (15 May 1981); doi: 10.1117/12.959042
Show Author Affiliations
Cardinal Warde, Massachusetts Institute of Technology (United States)


Published in SPIE Proceedings Vol. 0236:
1980 European Conf on Optical Systems and Applications
D. J. Kroon, Editor(s)

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