High-transmittivity non-periodic sub-wavelength high-contrast grating with large-angle beam-steering ability

被引：8
|
作者：
Ma, Changlian [1 ]
Huang, Yongqing [1 ]
Duan, Xiaofeng [1 ]
Ren, Xiaomin [1 ]
机构：
[1] Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China
来源：
CHINESE OPTICS LETTERS | 2014年 / 12卷 / 12期
基金：
中国国家自然科学基金; 高等学校博士学科点专项科研基金;
关键词：
FRESNEL LENSES; REFLECTORS;
D O I：
10.3788/COL201412.120501
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present a high-transmittivity non-periodic sub-wavelength high-contrast grating (HCG) with large-angle beam-steering ability for transmitted light. The phase front profile of transmitted light is a decisive factor to the beam-steering property of the HCG. By designing the structural parameters of the HCG, both beam steering and high transmittivity can be achieved. The properties of the beam steering and transmission are numerically studied with the finite element method. The results show that the transmittivity is up to 0.91 and the steering angle is 27.42 degrees which is consistent with the theoretical 30 degrees.
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页数：4
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