Electro-mechanical light modulator based on controlling the interaction of light with a metasurface

被引：22
作者：
Cencillo-Abad, Pablo [1 ,2 ]
Ou, Jun-Yu [1 ,2 ]
Plum, Eric [1 ,2 ]
Zheludev, Nikolay I. [1 ,2 ,3 ,4 ]
机构：
[1] Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England
[2] Univ Southampton, Ctr Photon Metamat, Southampton SO17 1BJ, Hants, England
[3] Nanyang Technol Univ, Sch Phys & Math Sci, Ctr Disrupt Photon Technol, Singapore 637371, Singapore
[4] Nanyang Technol Univ, Photon Inst, Singapore 637371, Singapore
来源：
SCIENTIFIC REPORTS | 2017年 / 7卷
基金：
英国工程与自然科学研究理事会;
关键词：
COHERENT CONTROL; REFLECTION; MANIPULATION;
D O I：
10.1038/s41598-017-05906-9
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：
We demonstrate a reflective light modulator, a dynamic Salisbury screen where modulation of light is achieved by moving a thin metamaterial absorber to control its interaction with the standing wave formed by the incident wave and its reflection on a mirror. Electrostatic actuation of the plasmonic metamaterial absorber's position leads to a dynamic change of the Salisbury screen's spectral response and 50% modulation of the reflected light intensity in the near infrared part of the spectrum. The proposed approach can also be used with other metasurfaces to control the changes they impose on the polarization, intensity, phase, spectrum and directional distribution of reflected light.
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页数：7
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