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Phase conjugation
About: Phase conjugation is a research topic. Over the lifetime, 3694 publications have been published within this topic receiving 49099 citations.
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TL;DR: In this article, a three-level atomic system in a resonance Raman configuration is provided, and self-pumped optical phase conjugation is performed in which the pumps are self-induced as standing waves in a Raman laser.
Abstract: A three-level atomic system in a resonance Raman configuration is provided, and self-pumped optical phase conjugation is performed in which the pumps are self-induced as standing waves in a Raman laser. Self-pumped reflectivities approaching five percent are obtained for input intensities of 20 watts per square cm. This low optical input intensity combined with predicted submicrosecond response times indicates that the resonant Raman interaction may provide the basis for a promising new class of non-linear optical materials.
11 citations
TL;DR: A quasi-optical approximation without allowance for beam spreading over its envelope is used to show that selection of a conjugate wave occurs in a volume hologram whose dimensions are greater than the longitudinal correlation length of the fields forming the hologram as mentioned in this paper.
Abstract: A quasi-optical approximation without allowance for beam spreading over its envelope is used to show that selection of a conjugate wave occurs in a volume hologram whose dimensions are greater than the longitudinal correlation length of the fields forming the hologram. The condition under which the signal power exceeds the noise power is found. Phase conjugation of a speckle field with a divergence of 2×10-2 by a four-wave interaction with feedback was achieved experimentally for neodymium-activated glass and the efficiency was 5%. The input energy threshold was 100 mJ and the maximum energy in the phase-conjugate wave was 10 mJ.
11 citations
TL;DR: In this paper, the influence of the processing parameters to the optical density of the methylene blue and erythrosin gelatin films was analyzed in a degenerate four wave mixing experiment.
11 citations
TL;DR: It is shown that the massively parallel data processing capabilities inherent in nonlinear optical interactions, coupled with their passive, all-optical nature, make this class of system potentially useful for the next generations of advanced laser systems, remote sensors, and communications systems, as well as optical data processors and network systems architectures.
Abstract: An overview of the field of nonlinear optical phase conjugation is given. The basic properties of a phase-conjugate mirror are discussed, and examples of how this technology can be applied to the areas of high-power lasers, optical communication systems, and optical data processing (including neural networks) are presented. It is shown that the massively parallel data processing capabilities inherent in nonlinear optical interactions, coupled with their passive, all-optical nature, make this class of system potentially useful for the next generations of advanced laser systems, remote sensors, and communications systems, as well as optical data processors and network systems architectures. >
11 citations
Journal Article•
11 citations