文章基本信息

标题：Parametric Instability Boundaries for Spatial Subharmonics in Photorefractive Moving Gratings: Theory and Experiments
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作者：Kwak, Chong-Hoon ; Lee, El-Hang
期刊名称：ETRI Journal
印刷版ISSN：1225-6463
电子版ISSN：2233-7326
出版年度：1995
卷号：16
期号：4
页码：13-13
语种：English
出版社：Electronics and Telecommunications Research Institute
摘要：We have derived a nonlinear spatiotemporal differential equation for space-charge fields from Kukhtarev’s material equations in a moving coordinate system and obtained the spatial subharmonic instability boundaries by using linear stability analysis. It is also found that there is an analogy between the temporal subharmonic and the spatial subharmonc instabilities in the sense that the governing differential equations describing the instability boundaries are formally identical. The experiments for generating spatial subharmonic waves are performed in a photorefractive crystal by using conventional moving grating technique. The threshold detunings are experimentally determined and the results are compared with the theory.