Pixelated metasurfaces integrating both the functions of linear polarization and circular polarization filters on a single platform can achieve full-Stokes polarization detection.At present,the pixelated full-Stokes m...Pixelated metasurfaces integrating both the functions of linear polarization and circular polarization filters on a single platform can achieve full-Stokes polarization detection.At present,the pixelated full-Stokes metasurfaces mainly face the following problems:low transmission,low circular dichroism(CD)of circular polarization filters,and high requirements in fabrication and integration.Herein,we propose high performance ultracompact all-dielectric pixelated full-Stokes metasurfaces in the near-infrared band based on silicon-on-insulator,which is compatible with the available semiconductor industry technologies.Circular polarization filters with high CD are achieved by using simple two-dimensional chiral structures,which can be easily integrated with the linear polarization filters on a single chip.In addition,the dielectric materials have higher transmission than metal materials with intrinsic absorption.We experimentally demonstrated the circular polarization filter with maximum CD up to 70%at a wavelength of 1.6μm and average transmission efficiency above 80%from 1.48μm to 1.6μm.Therefore,our design is highly desirable for many applications,such as target detection,clinical diagnosis,and polarimetric imaging and sensing.展开更多
基金International Science and Technology Cooperation Programme(20500711300)National Natural Science Foundation of China(61805264)+1 种基金Shanghai Sailing Program(18YF1426500)University Scientific Research Foundation of Jiangsu Province(KJS1713).
文摘Pixelated metasurfaces integrating both the functions of linear polarization and circular polarization filters on a single platform can achieve full-Stokes polarization detection.At present,the pixelated full-Stokes metasurfaces mainly face the following problems:low transmission,low circular dichroism(CD)of circular polarization filters,and high requirements in fabrication and integration.Herein,we propose high performance ultracompact all-dielectric pixelated full-Stokes metasurfaces in the near-infrared band based on silicon-on-insulator,which is compatible with the available semiconductor industry technologies.Circular polarization filters with high CD are achieved by using simple two-dimensional chiral structures,which can be easily integrated with the linear polarization filters on a single chip.In addition,the dielectric materials have higher transmission than metal materials with intrinsic absorption.We experimentally demonstrated the circular polarization filter with maximum CD up to 70%at a wavelength of 1.6μm and average transmission efficiency above 80%from 1.48μm to 1.6μm.Therefore,our design is highly desirable for many applications,such as target detection,clinical diagnosis,and polarimetric imaging and sensing.
