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Cascaded highly nondegenerate four-wave-mixing phenomenon in transparent isotropic condensed media

机译:透明各向同性凝聚介质中的级联非简并四波混频现象

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摘要

Broad-bandwidth light pulses with different frequencies, extending from the IR to the UV, are simultaneously generated when two noncollinear, ultrafast Iaser pulses from a visible dual-frequency laser propagate through bulk isotropic transparent media such as common glass. This phenomenon, which is believed to have been previously unreported, can be explained by a cascade of highly nondegenerate four-wave-mixing processes and corresponds to a coherent scattering effect with geometrically minimized phase mismatch. Frequency-upconverted beams were observed up to the 11th order.
机译:当来自可见双频激光器的两个非共线,超快速Iaser脉冲通过块状各向同性透明介质(例如普通玻璃)传播时,会同时生成从IR到UV的不同频率的宽带光脉冲。人们认为这种现象以前未曾报道过,可以通过一系列高度非简并的四波混合过程来解释,并且相当于具有几何最小化相位失配的相干散射效应。观察到频率转换的光束直到11阶。

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