新型高增益太赫兹折叠波导慢波结构 |
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引用本文: | 张芳,束小建,董志伟,杨温渊,孙会芳.新型高增益太赫兹折叠波导慢波结构[J].强激光与粒子束,2018,30(9):093102-1-093102-5. |
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作者姓名: | 张芳 束小建 董志伟 杨温渊 孙会芳 |
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作者单位: | 北京应用物理与计算数学研究所, 北京 100094 |
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摘 要: | 提出采用分段变参数型折叠波导慢波结构提高器件增益的新方法。结合小信号理论分析和束-波互作用的三维PIC数值模拟,进行分段变参数型慢波结构的理论设计研究。通过0.345 THz两段式折叠波导慢波结构的设计实现和模拟验证,结果证明, 相同的电子注工作条件下,两段式慢波结构的电子转化效率和饱和功率相对于传统均匀型慢波结构提高了94%,并可以推广应用到多段式。
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关 键 词: | 太赫兹 折叠波导慢波结构 分段变参数 高增益 |
收稿时间: | 2018-01-02 |
High-gain terahertz folded waveguide slow wave structure |
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Institution: | Institute of Applied Physics and Computational Mathematics, Beijing 100094, China |
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Abstract: | This paper proposes a new type of folded waveguide slow-wave structure with variable parameters, which can greatly increase the device's saturation gain. Combining small-signal theory analysis and three-dimensional PIC numerical simulation of beam-wave interaction process, the paper also proposes a theoretical design method for this variable-parameter slow-wave structure. A 0.345 THz two-stage folded waveguide slow-wave structure is designed and simulated, which proves that the two-stage slow-wave structure has higher electron conversion efficiency and saturation gain than the conventional uniform slow-wave structure under the same working conditions and can be widely applied to multi-stage structures. |
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