ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Loss induced negative refraction and super-prism effect at highly absorptive interface |
Jian Wu(吴坚)1,4, Tao Wang(王涛)1, Tianyue Hou(侯天悦)1, Xuefen Kan(阚雪芬)2, Cheng Yin(殷澄)2,3,4, Pu Zhou(周朴)1, Zhuangqi Cao(曹庄琪)3 |
1 College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China; 2 Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology, Hohai University, Changzhou 213022, China; 3 College of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China; 4 Hunan Provincial Key Laboratory of High Energy Laser Technology, Changsha 410073, China |
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Abstract It is well-established that waves are inhomogeneous in a lossy isotropic medium, and the validation of the classical Snell's law is still questionable for light refraction at the dissipative and dispersive interface. With high absorption, direct experimental investigation is rather difficult due to the extremely short penetration depth; i.e., the skin depth. In this paper, a simple and unified description of this issue is proposed, which can be applied to both materials with anomalous dispersion and in the Drude region. The gradient ▽kω is found to be incident angle θi-dependent, and the direction of the group velocity may deviate significantly from the phase velocity due to the loss induced permittivity structure. The physics behind the negative refraction effect is explained, and a novel loss induced super-prism effect is also predicted.
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Received: 09 October 2018
Revised: 16 January 2019
Accepted manuscript online:
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PACS:
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42.25.Bs
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(Wave propagation, transmission and absorption)
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41.85.Ct
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(Particle beam shaping, beam splitting)
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42.79.Bh
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(Lenses, prisms and mirrors)
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Fund: Project supported by the China Postdoctoral Science Foundation (Grant No. 2016M601586), the National Natural Science Foundation of China (Grant No. 11404092), and the Opening Funding of Hunan Provincial Key Laboratory of High Energy Laser Technology, China (Grant No. GNJGJS07). |
Corresponding Authors:
Jian Wu, Pu Zhou
E-mail: wujian15203@163.com;zhoupu203@163.com
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Cite this article:
Jian Wu(吴坚), Tao Wang(王涛), Tianyue Hou(侯天悦), Xuefen Kan(阚雪芬), Cheng Yin(殷澄), Pu Zhou(周朴), Zhuangqi Cao(曹庄琪) Loss induced negative refraction and super-prism effect at highly absorptive interface 2019 Chin. Phys. B 28 054201
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