23 March 1998 Phase-change disk optical correlator
Author Affiliations +
Proceedings Volume 3386, Optical Pattern Recognition IX; (1998); doi: 10.1117/12.304779
Event: Aerospace/Defense Sensing and Controls, 1998, Orlando, FL, United States
This paper will discuss the application of optical disk technology to optical processing. The limiting factor in optical image processing is the spatial light modulator. Spatial light modulators are currently limited by pixel size and TV frame rates. Optical disks provide pixel sizes on the order of a micron, fast access times and 650 MB storage space resulting in approximately 60,500 256 by 256 pixel images. CD, CD-Recordable, Magneto-Optic and Phase Change media have been studied. CD and CD-Recordable media provide high contrast, while phase-change media provides moderate contrast and rewritability. This paper will focus on an optical system that uses a phase-change disk as the filter medium in an optical correlator. Specially developed software to write two dimensional images to the phase-change disks will be addressed.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Michele Wilson McColgan, Keith B. Farr, Richard L. Hartman, "Phase-change disk optical correlator", Proc. SPIE 3386, Optical Pattern Recognition IX, (23 March 1998); doi: 10.1117/12.304779; https://doi.org/10.1117/12.304779

Optical correlators

Optical filters

Critical dimension metrology

Optical discs


Optical signal processing

Image storage


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