Reflectionless spatial beam benders with arbitrary bending angle by introducing optic-null medium into transformation optics

doi:10.1088/1674-1056/abd38b

Abstract By introducing an optic-null medium into the finite embedded transformation, a reflectionless spatial beam bender is designed, which can steer the output beam by a fixed pre-designed angle β for an arbitrary incident angle. The bending angle β of the beam bender is determined by the geometrical angle of the device, which can be changed by simply choosing different geometrical angles. For various bending angles, the designed spatial beam bender can be realized by the same materials (i.e., an optic-null medium), which is a homogenous anisotropic material. Numerical simulations verify the reflectionless bending effect and rotated imaging ability of the proposed beam bender. A reduction model of the optic-null medium is studied, which can also be used for a reflectionless spatial beam bender with a pre-designed bending angle.

Keywords: spatial beam benders optic-null medium transformation optics

Received: 10 July 2020
Revised: 06 October 2020
Accepted manuscript online: 15 December 2020

PACS:	41.20.Jb	(Electromagnetic wave propagation; radiowave propagation)
	42.25.Fx	(Diffraction and scattering)
	42.25.Gy	(Edge and boundary effects; reflection and refraction)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61971300, 11604292, 61905208, 11674239, and 11621101), the Scientific and Technological Innovation Programs (STIP) of Higher Education Institutions in Shanxi Province, China (Grant Nos. 2019L0159 and 2019L0146), and the Postdoctoral Science Foundation of China (Grant Nos. 2017T100430 and 2018M632455).

Corresponding Authors: ^†Corresponding author. E-mail: liuyichao@tyut.edu.cn ^‡Corresponding author. E-mail: huixu@126.com ^§Corresponding author. E-mail: sailing@kth.se

Cite this article:

Fei Sun(孙非), Yi-Chao Liu(刘一超), Yi-Biao Yang(杨毅彪), Hong-Ming Fei(费宏明), Zhi-Hui Chen(陈智辉), and Sai-Ling He(何赛灵) Reflectionless spatial beam benders with arbitrary bending angle by introducing optic-null medium into transformation optics 2021 Chin. Phys. B 30 034101

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Reflectionless spatial beam benders with arbitrary bending angle by introducing optic-null medium into transformation optics

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