Reflection tuning via destructive interference in metasurface  

作　　者：Yang Li Yang Li Lianwei Chen Minghui Hong 

机构地区：[1]National University of Singapore [2]State Key Laboratory of Optical Technologies for Nano-Fabrication and Micro-Engineering, Institute of Optics and Electronics,Chinese Academy of Sciences

出　　处：《光电工程》2017年第3期313-318,共6页Opto-Electronic Engineering

基　　金：financially supported by A*STAR, SERC 2014 Public Sector Research Funding (PSF) (Grant: SERC Project 1421200080);973 Program of China (2013CBA01700);Chinese Nature Science Grant (61675207);Mr.Li Yang acknowledges the support from China Scholarship Council (CSC)

摘　　要：Reflection engineering plays an important role in optics.For conventional approaches,the reflection tuning is quite challenging in a loss-free component.Therefore,a simple approach to tune the reflection is highly desired in plenty of applications.In this paper,we propose a new design of metasurface with just one single layer dielectric structure to tune the reflection of an interface by destructive interference in a subwavelength scale.By arranging the orientation of nano-antennas,the reflectivity tuning from 20%to 90%can be achieved at the wavelength of 1550 nm.Moreover,such reflectivity tuning of the designed metasurface works at the tunable wavelength from1500 nm to 1600 nm.This ultra-thin solution can achieve similar performance as the traditional bulky components without diffraction orders,while the design and fabrication are much simple and flexible.The ultra-thin and tunable properties indicate the great potentials of this method to be applied in laser fabrication,optical communication and optical integration.Reflection engineering plays an important role in optics.For conventional approaches,the reflection tuning is quite challenging in a loss-free component.Therefore,a simple approach to tune the reflection is highly desired in plenty of applications.In this paper,we propose a new design of metasurface with just one single layer dielectric structure to tune the reflection of an interface by destructive interference in a subwavelength scale.By arranging the orientation of nano-antennas,the reflectivity tuning from 20%to 90%can be achieved at the wavelength of 1550 nm.Moreover,such reflectivity tuning of the designed metasurface works at the tunable wavelength from1500 nm to 1600 nm.This ultra-thin solution can achieve similar performance as the traditional bulky components without diffraction orders,while the design and fabrication are much simple and flexible.The ultra-thin and tunable properties indicate the great potentials of this method to be applied in laser fabrication,optical communication and optical integration.

关 键 词：metasurface REFLECTION TUNABLE destructive interference 

分 类 号：TB[一般工业技术]