Mode analysis and design of 0.3-THz Clinotron |
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Institution: | 1.Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, China;2.Laboratory on Science and Technology of High Power Microwave, Northwest Institute of Nuclear Technology, Xi'an 710024, China |
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Abstract: | To develop a high-power continuous-wave terahertz source, a Clinotron operating at 0.3 THz is investigated. Based on the analyses of field distribution and coupling impedance, the dispersion characteristic of a rectangular resonator is preliminarily studied. The effective way to select fundamental mode to interact with the electron beam is especially studied.Finally, the structure is optimized by particle-in-cell simulation, and the problems of manufacture tolerance, current density threshold, and heat dissipation during Clinotron's operation are also discussed. The optimum device can work with a good performance under the conditions of 8 k V and 60 m A. With the generation of signal frequency at 315.89 GHz and output power at 12 W on average, this device shows great prospects in the application of terahertz waves. |
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Keywords: | terahertz Clinotron mode selection particle simulation |
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