Tunable and scalable broadband metamaterial absorber involving VO2-based phase transition

Lei, Lei1; Lou, Fei2; Tao, Keyu1; Huang, Haixuan3; Cheng, Xin2; Xu, Ping1

2019-07

10.1364/PRJ.7.000734

Photonics Research   影响因子和分区

2327-9125

Optical absorbers with dynamic tuning features are able to flexibly control the absorption performance, which offers a good platform for realizing optical switching, filtering, modulating, etc. Here, we propose a thermally tunable broadband absorber applying a patterned plasmonic metasurface with thermo-chromic vanadium dioxide (VO2) spacers. An actively tunable absorption bandwidth and peak resonant wavelength in the region from the near-to mid-infrared (NMIR) are simultaneously achieved with the insulating -metallic phase transition of VO2. Moreover, the scalable unit cell, which is composed of multi-width sub-cells, provides a new freedom to further manipulate (i.e., broaden or narrow) the absorption bandwidth while maintaining a high relative absorption bandwidth and efficient absorbance at the same time. For both transverse-electric and transverse-magnetic polarizations, the proposed nanostructure exhibits a high absorption over a wide angular range up to 60 degrees. This method holds a promising potential for versatile utilizations in optical integrated devices, NMIR photodetection, thermal emitters, smart temperature control systems, and so forth. (C) 2019 Chinese Laser Press

SCI ; EI

英语

其他

Basic Research Program of Shenzhen[JCYJ20170302151033006] ; Basic Research Program of Shenzhen[JCYJ2017081701827765] ; Basic Research Program of Shenzhen[JCYJ20170817111349280]

Optics

Optics

WOS:000473345500008

OPTICAL SOC AMER

20193407330296

Bandwidth ; Plasmonics

Information Theory and Signal Processing:716.1

Web of Science

1.Shenzhen Univ, Coll Elect Sci & Technol, Shenzhen 518060, Peoples R China
2.Southern Univ Sci & Technol, Sch Innovat & Entrepreneurship, Shenzhen 518055, Peoples R China
3.Shenzhen Technol Univ, Coll Big Data & Internet, Shenzhen 518118, Peoples R China

Lei, Lei,Lou, Fei,Tao, Keyu,et al. Tunable and scalable broadband metamaterial absorber involving VO2-based phase transition[J]. Photonics Research,2019,7(7):734-741.

Lei, Lei,Lou, Fei,Tao, Keyu,Huang, Haixuan,Cheng, Xin,&Xu, Ping.(2019).Tunable and scalable broadband metamaterial absorber involving VO2-based phase transition.Photonics Research,7(7),734-741.

Lei, Lei,et al."Tunable and scalable broadband metamaterial absorber involving VO2-based phase transition".Photonics Research 7.7(2019):734-741.