Computer-generated hologram (CGH) in optical computing and neural network

Roger A. Lessard; Guylain Lemelin

doi:10.1117/12.186648

14 September 1994 Computer-generated hologram (CGH) in optical computing and neural network

Roger A. Lessard, Guylain Lemelin

Proceedings Volume 2337, Optical Characterization Techniques for High-Performance Microelectronic Device Manufacturing; (1994) https://doi.org/10.1117/12.186648
Event: Microelectronic Manufacturing, 1994, Austin, TX, United States

Abstract

Computer Generated Holograms (CGHs) are attractive devices because of their capacity to reconstruct any wavefront defined by a mathematical function, within the limits of the fabrication techniques. That wavefront modulation can combine or divide an input beam (fan-in and fan-out element): multiple phase functions can be coded in the plane of the CGH, as optimized numerically, doing different task during the same time, without multiplex holograms recorded in the thickness of the element. This feature is particular to CGH of diffractive optical element with surface relief modulation and permits easy copying for mass production. Also, we will present a device for sequence addressing produced by our simple technique, giving about 50% of efficiency with only one mask by simulated misfocussing.

Citation Download Citation

Roger A. Lessard and Guylain Lemelin "Computer-generated hologram (CGH) in optical computing and neural network", Proc. SPIE 2337, Optical Characterization Techniques for High-Performance Microelectronic Device Manufacturing, (14 September 1994); https://doi.org/10.1117/12.186648

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