Large-area laser-driven terahertz emitters
Large-area laser-driven terahertz emitters
复制标题
大面积激光驱动太赫兹发射器
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
T. Dekorsy
中科院分区：
文献类型：
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作者：
G. Klatt;D. Stephan;M. Beck;J. Demšar;T. Dekorsy
强太赫兹发射器是太赫兹（THz）时域光谱系统最重要的组成部分之一。在这份报告中，回顾了过去二十年太赫兹发射器的发展，并对未来太赫兹发射器进行了展望。针对两种类型的发射器讨论了太赫兹产生过程背后的物理原理：将最先进的大面积光电导发射器与基于光登伯效应的太赫兹发射器进行比较。后者不需要外部偏置电压。光登伯发射器的这种无源特性具有以下概述的几个优点。
Intense terahertz emitters are one of the most important components of terahertz (THz) time-domain spectroscopy systems. In this presented report, the development of THz emitters over the last two decades is reviewed, and an outlook for future THz emitters is given. The physical principle behind the THz generation process is discussed for two types of emitters: state-of-the-art large-area photoconductive emitters are compared to THz emitters based on the photo-Dember effect. The latter do not require an external bias voltage. This passive character of the photo-Dember emitters has several advantages which are outlined.