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太赫兹频段一维介质光子晶体中的史密斯-帕塞尔辐射特性模拟

Keywords: Smith-Purcell辐射,电子束团,THz,相干辐射

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Abstract:

基于Smith-Purcell(SP)效应,采用粒子模拟的方法探讨了电子束团激发一维介质光子晶体中的SP辐射特性.模拟研究了单个束团激发一维介质圆柱光子晶体产生的SP辐射现象,并对周期束团激发的THz频段的相干SP辐射进行了模拟分析.研究表明,提高介质的相对介电常数和增加光子晶体的层数都可使辐射强度增加,选择合适的参数能够有效地增强THz频段的相干SP辐射强度.

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