Metadevice for intensity modulation with sub-wavelength spatial resolution

被引：14
|
作者：
Cencillo-Abad, Pablo [1 ,2 ]
Zheludev, Nikolay I. [1 ,2 ,3 ,4 ]
Plum, Eric [1 ,2 ]
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 | 2016年 / 6卷
基金：
英国工程与自然科学研究理事会;
关键词：
LIGHT; REFLECTION; CLOAK;
D O I：
10.1038/srep37109
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：
Effectively continuous control over propagation of a beam of light requires light modulation with pixelation that is smaller than the optical wavelength. Here we propose a spatial intensity modulator with sub-wavelength resolution in one dimension. The metadevice combines recent advances in reconfigurable nanomembrane metamaterials and coherent all-optical control of metasurfaces. It uses nanomechanical actuation of metasurface absorber strips placed near a mirror in order to control their interaction with light from perfect absorption to negligible loss, promising a path towards dynamic diffraction and focusing of light as well as holography without unwanted diffraction artefacts.
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页数：7
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