Ultrafast near-infrared pyroelectric detector based on inhomogeneous plasmonic metasurface  

作　　者：Youyan Lu Liyun Liu Ruoqian Gao Ying Xiong Peiqing Sun Zhanghao Wu Kai Wu Tong Yu Kai Zhang Cheng Zhang Tarik Bourouina Xiaofeng Li Xiaoyi Liu 

机构地区：[1]School of Optoelectronic Science and Engineering&Collaborative Innovation Center of Suzhou Nano Science and Technology,Soochow University,Suzhou 215006,China [2]Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province&Key Lab of Modern Optical Technologies of Education Ministry of China,Soochow University,Suzhou 215006,China [3]Suzhou Institute of Biomedical Engineering and Technology of the Chinese Academy of Sciences,Suzhou 215163,China [4]College of Intelligence Science and Technology,National University of Defense Technology,Changsha 410073,China [5]Laboratory of Science and Technology on Integrated Logistics Support,National University of Defense Technology,Changsha 410073,China [6]State Key Laboratory of Silicon and Advanced Semiconductor Materials,Zhejiang University,Hangzhou 310027,China [7]ESYCOM Lab,UMR 9007 CNRS,Univ Gustave Eiffel,77454 Marne-la-Vallée,France [8]CINTRA,IRL 3288 CNRS-NTUTHALES,Nanyang Technological University,Singapore 637553,Singapore

出　　处：《Light(Science & Applications)》2024年第11期2566-2575,共10页光（科学与应用)（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.62205227,No.62120106001);the Natural Science Foundation of the Jiangsu Higher Education Institutions of China(No.22KJB140005,No.23KJA510008);the Suzhou Science and Technology Plan Projects(No.SYG202124,No.SYG202304);the Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province,Soochow University(No.ZZ2311,No.ZZ2112);State Key Laboratory of Silicon and Advanced Semiconductor Materials,Zhejiang University(No.SKL2023−01).

摘　　要：Pyroelectric(PE)detection technologies have attracted extensive attention due to the cooling-free,bias-free,and broadband properties.However,the PE signals are generated by the continuous energy conversion processes from light,heat,to electricity,normally leading to very slow response speeds.Herein,we design and fabricate a PE detector which shows extremely fast response in near-infrared(NIR)band by combining with the inhomogeneous plasmonic metasurface.The plasmonic effect dramatically accelerates the light-heat conversion process,unprecedentedly improving the NIR response speed by 2−4 orders of magnitude to 22μs,faster than any reported infrared(IR)PE detector.We also innovatively introduce the concept of time resolution into the field of PE detection,which represents the detector’s ability to distinguish multiple fast-moving targets.Furthermore,the spatially inhomogeneous design overcomes the traditional narrowband constraint of plasmonic systems and thus ensures a wideband response from visible to NIR.This study provides a promising approach to develop next-generation IR PE detectors with ultrafast and broadband responses.

关 键 词：INHOMOGENEOUS PLASMON OVERCOME 

分 类 号：TN215[电子电信—物理电子学]