Logarithmic output from cascaded two-beam coupling interactions in photorefractive crystals
Applied Optics, Vol. 29, Issue 23, pp. 3362-3364 (1990)
http://dx.doi.org/10.1364/AO.29.003362
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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.
© 1990 Optical Society of America
Citation
Robert W. Eason and Stephen W. James, "Logarithmic output from cascaded two-beam coupling interactions in photorefractive crystals," Appl. Opt. 29, 3362-3364 (1990)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-29-23-3362
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