中国科学:物理学 力学 天文学(英文版)2024，Vol.67Issue(1) ：46-51.DOI:10.1007/s11433-023-2216-1

Robust asymmetric Cherenkov radiation in tilted anisotropic medium

Shuwen Xue Yadong Xu Linkang Han Zhi Ning Chen Qiaoliang Bao Shan Zhu Huanyang Chen
中国科学:物理学 力学 天文学(英文版)2024，Vol.67Issue(1) ：46-51.DOI:10.1007/s11433-023-2216-1
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Robust asymmetric Cherenkov radiation in tilted anisotropic medium

Shuwen Xue 1Yadong Xu 2Linkang Han 3Zhi Ning Chen 4Qiaoliang Bao 5Shan Zhu 3Huanyang Chen3
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作者信息

  • 1. Institute of Electromagnetics and Acoustics and Department of Physics,College of Physical Science and Technology,Jiujiang Research Institute,Xiamen University,Xiamen 361005,China;Department of Electrical and Computer Engineering,National University of Singapore,Singapore 8117583,Singapore
  • 2. School of Physical Science and Technology,Institute of Theoretical and Applied Physics,Soochow University,Suzhou 215006,China
  • 3. Institute of Electromagnetics and Acoustics and Department of Physics,College of Physical Science and Technology,Jiujiang Research Institute,Xiamen University,Xiamen 361005,China
  • 4. Department of Electrical and Computer Engineering,National University of Singapore,Singapore 8117583,Singapore
  • 5. Institute of Energy Materials Science(IEMS),University of Shanghai for Science and Technology,Shanghai 200093,China
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Abstract

Cherenkov radiation(CR)is available for a wide variety of terahertz(THz)radiation sources,but its efficiency is deeply affected by intrinsic losses.We find that if the tilted angle(α)of anisotropic material and radiation angle(θ)meet the condition of θ+α=π/2,the intensity of radiation fields for the charged particle bunch(CPB)moving from left to right cannot be influenced by intrinsic losses,which means long-distance radiation can be achieved.Furthermore,we observe an asymmetric CR when the CPB moves from the opposite direction.In addition,we select natural van der Waals(vdW)material α-MoO3 as an example,further confirming that the radiation field can reach the far field and the asymmetric CR radiation can also be observed.These wonderful properties with long-distance radiation will extend the application of CR to a certain extent for future design and fabrication.

Key words

asymmetric Cherenkov radiation/intrinsic losses/long-distance radiation

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基金项目

National Key Research and Development Program of China(2023YFA1407100)

National Key Research and Development Program of China(2020YFA0710100)

National Natural Science Foundation of China(92050102)

National Natural Science Foundation of China(12374410)

Jiangxi Provincial Natural Science Foundation(20224ACB201005)

Fundamental Research Funds for the Central Universities(20720230102)

Fundamental Research Funds for the Central Universities(20720220033)

111 project(B16029)

China Scholarship Council(202206310008)

出版年

2024
中国科学:物理学 力学 天文学(英文版)
中国科学院

中国科学:物理学 力学 天文学(英文版)

CSTPCD
影响因子：0.91
ISSN：1674-7348
参考文献量49
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