由扇宁效应引起的光折变波导中激光束的自通道

A. Kamshilin, E. Raita, A. Khomenko
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引用次数: 0

摘要

本文报道了光折变Bi12TiO20波导样样品中光束自通道的实验观察。这种现象发生在强烈的扇形效应发生时。波导表面扇形光束的全内反射及其与泵浦光束的耦合导致光折变波导内部光强的重新分布。光强增加的自诱导通道加速了光折变能量交换过程。
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Laser Beam Self-Channeling in a Photorefractive Waveguide Caused by Fanning Effect
We report an experimental observation of the light beam self-channeling inside the photorefractive Bi12TiO20 waveguide-like sample. The phenomenon occurs when the strong fanning effect takes place. Total internal reflections of fanned beams from the waveguide surfaces and their coupling with the pump beam result in the light intensity redistribution inside the photorefractive waveguide. The self-induced channel of the increased light intensity speeds up the photorefractive energy exchange process.
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