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 des...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.展开更多
基金financially supported by A*STAR, SERC 2014 Public Sector Research Funding (PSF) (Grant: SERC Project 1421200080)973 Program of China (2013CBA01700)+1 种基金Chinese Nature Science Grant (61675207)Mr.Li Yang acknowledges the support from China Scholarship Council (CSC)
文摘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.
基金supported by the Ministry of Science and Technology of China(2022YFA1403901)the National Natural Science Foundation of China(11888101 and 12174428)+1 种基金the Strategic Priority Research Program of the Chinese Academy of Sciences(XDB28000000)the Chinese Academy of Sciences through the Youth Innovation Promotion Association(2022YSBR-048)。
