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Temporal evolution of photorefractive double phase-conjugate mirrors

Segev, Mordechai and Engin, Doruk and Yariv, Amnon and Valley, George C. (1993) Temporal evolution of photorefractive double phase-conjugate mirrors. Optics Letters, 18 (21). pp. 1828-1830. ISSN 0146-9592.

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We present wave-optics calculations of the temporal and spatial evolution from random noise of a double phase-conjugate mirror in photorefractive media that show its image exchange and phase-reversal properties. The calculations show that for values of coupling coefficient times length greater than two the process exhibits excellent conjugation fidelity, behaves as an oscillator, and continues to operate even when the noise required for starting it is set to zero. For values less than two, the double phase-conjugation process exhibits poor fidelity and disappears when the noise is set to zero.

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Additional Information:© Copyright 1993 Optical Society of America Received April 6, 1993 We acknowledge the enlightening comments of the reviewers of this Letter. Note added in proof: In calculations performed after this Letter was accepted, we find that the threshold value is not necessarily equal to 2, in general, but depends on the spatial profile of the input beams and decreases with decreasing feature size in the information borne on the beams.
Issue or Number:21
Record Number:CaltechAUTHORS:SEGol93b
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:3054
Deposited By: Archive Administrator
Deposited On:12 May 2006
Last Modified:02 Oct 2019 22:59

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