Wavelength de-multiplexing metasurface hologram

被引：45
|
作者：
Wang, Bo [1 ,2 ]
Quan, Baogang [3 ]
He, Jingwen [4 ]
Xie, Zhenwei [1 ,2 ]
Wang, Xinke [1 ,2 ]
Li, Junjie [3 ]
Kan, Qiang [5 ]
Zhang, Yan [1 ,2 ]
机构：
[1] Capital Normal Univ, Beijing Key Lab Metamat & Devices, Key Lab Terahertz Optoelect, Dept Phys,Minist Educ, Beijing, Peoples R China
[2] Beijing Adv Innovat Ctr Imaging Technol, Beijing 100048, Peoples R China
[3] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China
[4] Harbin Inst Technol, Dept Phys, Harbin 150001, Peoples R China
[5] Chinese Acad Sci, Inst Semicond, Key Lab Semicond Mat Sci, Beijing 100083, Peoples R China
来源：
SCIENTIFIC REPORTS | 2016年 / 6卷
基金：
中国国家自然科学基金;
关键词：
BROAD-BAND; PHASE; SPIN; LENSES;
D O I：
10.1038/srep35657
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
A wavelength de-multiplexing metasurface hologram composed of subwavelength metallic antennas is designed and demonstrated experimentally in the terahertz ( THz) regime. Different character patterns are generated at the separated working frequencies 0.50 THz and 0.63 THz which determine a narrow frequency bandwidth of 130 GHz. The two working frequencies are around the central resonance frequency of the antennas where antennas behave strong wavefront modulation. Each antenna is fully utilized to control the wavefront of the metasurface at different frequencies by an optimization algorithm. The results demonstrate a candidate way to design multi-colors optical display elements.
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收藏
页数：6
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