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Definition of "two-wave mixing" |
a nonlinear optical process in which two beams of coherent light interact inside nonlinear media or photorefractive crystals. When two beams of coherent electromagnetic radiation intersect inside a nonlinear medium of a photorefractive crystal, the periodic variation of the intensity due to interference will induce a volume refractive index grating. The presence of such a refractive index grating will then affect the propagation of these two beams. This may lead to energy coupling. The coupling of the two beams in nonlinear media is referred to as two-wave mixing. |
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