Simultaneously coherent excitation of multi-modes THz radiation from dielectric loaded waveguide by pre-bunched electron beam

Simultaneously coherent excitation of multi-modes THz radiation from dielectric loaded waveguide by pre-bunched electron beam
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通过预聚束电子束同时相干激发介电负载波导的多模太赫兹辐射

DOI:
10.1088/1361-6463/aa50c2
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发表时间:
2017-01
影响因子:
3.4
通讯作者:
Wang Lin
Wang Lin
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Li Biaobin;Lu Yalin;He Zhigang;Li Weiwei;Jia Qika;Wang Lin

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圆柱形介质加载波导(DLW)支持一组离散模式,电子束通过该结构可以激发这些模式,通过适当选择DLW的参数,高阶模式可以是基模的谐波。通过使用在DLW的基频重复的电子聚束串作为驱动源,可以期望多模式的相干和同时激发。该方案可以同时获得高脉冲功率、高频率的多色窄带太赫兹辐射。
The cylindrical dielectric loaded waveguide (DLW) supports a discrete set of modes, which can be excited by electron beam passing through the structure, and the high-order modes can be the harmonics of the fundamental one by properly choosing the parameters of the DLW. By using a train of electron bunches, repeated at the fundamental frequency of the DLW, as the driving source, coherent and simultaneous excitation of multi-modes can be expected. With this proposed scheme, multi-color narrow-band THz radiation with high pulse power and high frequency can be obtained simultaneously.
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