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Logarithmic output from cascaded two-beam coupling interactions in photorefractive crystals

Logarithmic output from cascaded two-beam coupling interactions in photorefractive crystals
Logarithmic output from cascaded two-beam coupling interactions in photorefractive crystals
A scheme is presented that uses cascaded two-beam coupling interactions to optically generate a log transform. By optimizing the two free parameters of gain coefficient and beam intensity ratio for each interaction region, we have generated a computed output intensity that is the natural log of the input intensity, with an accuracy of better than 1% over a four decade dynamic range.
0003-6935
3362-3364
Eason, Robert W.
e38684c3-d18c-41b9-a4aa-def67283b020
James, Stephen W.
49f0ce7c-9031-4b05-b37c-a73d768c21fc
Eason, Robert W.
e38684c3-d18c-41b9-a4aa-def67283b020
James, Stephen W.
49f0ce7c-9031-4b05-b37c-a73d768c21fc

Eason, Robert W. and James, Stephen W. (1990) Logarithmic output from cascaded two-beam coupling interactions in photorefractive crystals. Applied Optics, 29 (23), 3362-3364. (doi:10.1364/AO.29.003362).

Record type: Article

Abstract

A scheme is presented that uses cascaded two-beam coupling interactions to optically generate a log transform. By optimizing the two free parameters of gain coefficient and beam intensity ratio for each interaction region, we have generated a computed output intensity that is the natural log of the input intensity, with an accuracy of better than 1% over a four decade dynamic range.

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Published date: 1990

Identifiers

Local EPrints ID: 78623
URI: https://eprints.soton.ac.uk/id/eprint/78623
ISSN: 0003-6935
PURE UUID: e249e0a2-75cd-4ca6-b471-df2ba14054f3
ORCID for Robert W. Eason: ORCID iD orcid.org/0000-0001-9704-2204

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Date deposited: 11 Mar 2010
Last modified: 06 Jun 2018 13:13

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Contributors

Author: Robert W. Eason ORCID iD
Author: Stephen W. James

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