Dynamic tunable LWIR achromatic metalens comprising all-As_(2)Se_(3) microstructures  

作　　者：Zhihao He Bingxia Wang Zhiang Qian Kongsi Zhou Xiang Shen Yungui Ma 贺志豪;王炳霞;钱志昂;周孔思;沈祥;马云贵(Laboratory of Infrared Materials and Devices,The Research Institute of Advanced Technologies,Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province,Ningbo University,Ningbo 315211,China;State Key Laboratory of Modern Optical Instrumentation,Centre for Optical and Electromagnetic Research,College of Optical Science and Engineering,International Research Center for Advanced Photonics,Zhejiang University,Hangzhou 310058,China)

机构地区：[1]Laboratory of Infrared Materials and Devices,The Research Institute of Advanced Technologies,Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province,Ningbo University,Ningbo 315211,China [2]State Key Laboratory of Modern Optical Instrumentation,Centre for Optical and Electromagnetic Research,College of Optical Science and Engineering,International Research Center for Advanced Photonics,Zhejiang University,Hangzhou 310058,China

出　　处：《Chinese Optics Letters》2024年第6期191-195,共5页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No.62105171);Zhejiang Provincial Natural Science Foundation (No.LY24F050001);Joint Funds of the National Natural Science Foundation of China (No.U21A2056);Key Research and Development Program of Zhejiang Province (No.2021C01025);K.C.Wong Magna Fund in Ningbo University。

摘　　要：In the field of long-wave infrared(LWIR) thermal imaging, vital for applications such as military surveillance and medical diagnostics, metalenses show immense potential for compact, lightweight, and low-power optical systems. However, to date, the development of LWIR broadband achromatic metalenses with dynamic tunable focus, which are suitable for both coaxial and off-axis applications, remains a large unexplored area. Herein, we have developed an extensive database of broadband achromatic all-As2Se3microstructure units for the LWIR range. Utilizing this database with the particle swarm optimization (PSO) algorithm, we have designed and demonstrated LWIR broadband achromatic metalenses capable of coaxial and off-axis focusing with three dynamic tunable states. This research may have potential applications for the design of compact, high-performance optical devices, including those with extreme depth-of-field and wide-angle imaging capabilities.

关 键 词：achromatic metalens long-wave infrared dynamic tunable focus 

分 类 号：TN219[电子电信—物理电子学]