A scheme to enhance the conversion efficiency of slow‐wave electron cyclotron masers in the large signal approximation |
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| Authors: | Yu‐Fei Zhang Kang Wang Yong‐Ming Li Jian Jing |
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| Affiliation: | 1. School of Science, Beijing University of Chemical Technology, Beijing, China;2. Information Science and Engineering College, XinJiang University, Urumqi, P.R. China |
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| Abstract: | Based on the anomalous Doppler effect, we propose a scheme to improve the practicability of slow‐wave electron cyclotron masers in the large signal approximation. This scheme simultaneously contains the tapered guiding magnetic field and tapered refractive index. Numerical calculations show that this scheme enables the conversion efficiency to reach a higher value within a shorter time than previous schemes. Besides, this scheme also works well in the cases of THz wave band and beam axial‐velocity spread. |
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| Keywords: | conversion efficiency electron cyclotron maser tapered guiding magnetic field tapered refractive index |
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