首页|Robust asymmetric Cherenkov radiation in tilted anisotropic medium

Robust asymmetric Cherenkov radiation in tilted anisotropic medium

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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.

asymmetric Cherenkov radiationintrinsic losseslong-distance radiation

Shuwen Xue、Yadong Xu、Linkang Han、Zhi Ning Chen、Qiaoliang Bao、Shan Zhu、Huanyang Chen

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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

School of Physical Science and Technology,Institute of Theoretical and Applied Physics,Soochow University,Suzhou 215006,China

Institute of Energy Materials Science(IEMS),University of Shanghai for Science and Technology,Shanghai 200093,China

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National Key Research and Development Program of ChinaNational Key Research and Development Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaJiangxi Provincial Natural Science FoundationFundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central Universities111 projectChina Scholarship Council

2023YFA14071002020YFA0710100920501021237441020224ACB2010052072023010220720220033B16029202206310008

2024

10.1007/s11433-023-2216-1

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
年,卷(期)：2024.67(1)
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