Simulations of table-top watt-class 1 THz radiation sources with two-section periodic structure
Simulations of table-top watt-class 1 THz radiation sources with two-section periodic structure
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DOI：
10.1063/1.4861141
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发表时间：
2014-01
影响因子：
3.2
通讯作者：
Weihao Liu;Zhengyuan Xu
中科院分区：
文献类型：
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作者：
Weihao Liu;Zhengyuan Xu
对两种具有两段周期波导结构的太赫兹源进行了仿真研究。后段（II段）的工作频率是前段（I段）的四次谐波，II段既可以工作在前波区，也可以工作在后波区。讨论了可能影响此类源正常运行的关键因素——过度聚束，并提出了相应的解决方案。这些光源长度为毫米，可以产生功率超过1瓦的1太赫兹波辐射，因此，它们是有前途的桌面和相对高功率太赫兹光源。
Two types of terahertz sources with two-section periodical waveguide structure are studied by simulations. The operation frequency of the rear section (section-II) is the fourth harmonic of that of the front section (section-I), and section-II can operate both in the forward wave region and backward wave region. The critical factor that may affect the proper functioning of this kind of sources—overbunching—is discussed, and the corresponding solutions are proposed. These sources, with millimeter in length, can generate 1 THz wave radiation with power over 1 W, so, they are promising table-top and relatively high power terahertz sources.