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首页> 外文会议>Optical technologies in biophysics and medicine XV; and Laser physics and photonics XV >Parametrical down-conversion process on all-optical poling
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Parametrical down-conversion process on all-optical poling

机译：全光极化的参数下转换过程

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摘要

Investigations of the nonlinear optical phenomenon of light parametrical down-frequency conversion which is appeared on micro-periodic nonlinear structures photo-integrated in volumetric optical isotropic medium on all-optical poling process are presented. The observed phenomenon is similar to the well known degenerate parametric conversion in square-nonlinear media such as the optical nonlinear crystals. Observations of the amplification of low light signals on the created micro-structured oxide glass materials and also the appearance of the photoelectric instability of the preliminarily induced optical anisotropy by illumination of medium with use the coherent monochromatic source are considered. The big growth of the intensity of small signal of the basic frequency radiation with time (a photo-induced amplification of light) has been detected in experiments with the influence upon amorphous optical material simultaneously by the weak probe radiation of the basic frequency and the strong radiation of the second harmonic. Various modes of the amplification of light signal in experimental samples were investigated in presence of the preliminary created photo-integrated nonlinear structures with different amplitudes and mechanisms of the occurrence of the parametric generation in photo-integrated structures with the existence of the non-steady regimes of signal amplification are discussed.
机译：提出了在全光学极化过程中光积分在体积各向同性介质中的微周期非线性结构中出现的光参数降频转换的非线性光学现象的研究。观察到的现象类似于在正方形非线性介质（如光学非线性晶体）中众所周知的简并参数转换。考虑了在所形成的微结构化氧化物玻璃材料上的弱光信号的放大观察以及通过使用相干单色光源照射介质而引起的初步感应的光学各向异性的光电不稳定性的现象。在实验中已经检测到基本频率辐射的小信号强度随时间的增长（光诱导的光放大），同时由于弱的基本频率探针辐射和强的辐射强度同时对非晶态光学材料产生了影响。二次谐波的辐射。在存在具有不同振幅的预先创建的光积分非线性结构的情况下，研究了光信号在实验样本中的各种放大方式，并在存在非稳态机制的情况下研究了光积分结构中参数生成的发生机理讨论信号放大。

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