Nonlinear memristive computational spectrometer  

作　　者：Xin Li Jie Wang Feilong Yu Jin Chen Xiaoshuang Chen Wei Lu Guanhai Li 

机构地区：[1]State Key Laboratory of Infrared Physics,Shanghai Institute of Technical Physics,Chinese Academy of Sciences,500 Yu-Tian Road,Shanghai 200083,China [2]School of Physical Science and Technology,ShanghaiTech University,Shanghai 201210,China [3]University of Chinese Academy of Science,No.19A Yuquan Road,Beijing 100049,China [4]Hangzhou Institute for Advanced Study,University of Chinese Academy of Sciences,No.1 Sub-Lane Xiangshan,Hangzhou 310024,China [5]Shanghai Research Center for Quantum Sciences,99 Xiupu Road,Shanghai 201315,China

出　　处：《Light(Science & Applications)》2025年第2期374-383,共10页光(科学与应用)(英文版)

基　　金：supported by National Key Research and Development Program of China(2023YFA1406900);Strategic Priority Research Program(B)of Chinese Academy of Sciences(XDB0580000,XDB43010200,GJ0090406);National Natural Science Foundation of China(62222514,62350073,U2341226,61991440,12227901);Shanghai Science and Technology Committee(23ZR1482000,22JC1402900);Natural Science Foundation of Zhejiang Province(LR22F050004);Shanghai Municipal Science and Technology Major Project(2019SHZDZX01);Youth Innovation Promotion Association(Y2021070);International Partnership Program(112GJHZ2022002FN)of Chinese Academy of Sciences;Shanghai Human Resources and Social Security Bureau(2022670);China Postdoctoral Science Foundation(2023T160661,2022TQ0353and 2022M713261).

摘　　要：In the domain of spectroscopy,miniaturization efforts often face significant challenges,particularly in achieving high spectral resolution and precise construction.Here,we introduce a computational spectrometer powered by a nonlinear photonic memristor with a WSe2 homojunction.This approach overcomes traditional limitations,such as constrained Fermi level tunability,persistent dark current,and limited photoresponse dimensionality through dynamic energy band modulation driven by palladium(Pd)ion migration.The critical role of Pd ion migration is thoroughly supported by first-principles calculations,numerical simulations,and experimental verification,demonstrating its effectiveness in enhancing device performance.Additionally,we integrate this dynamic modulation with a specialized nonlinear neural network tailored to address the memristor's inherent nonlinear photoresponse.This combination enables our spectrometer to achieve an exceptional peak wavelength accuracy of o.18 nm and a spectral resolution of 2 nm within the 630-640 nm range.This development marks a significant advancement in the creation of compact,high-effciency spectroscopic instruments and offers a versatile platform for applications across diverse material systems.

关 键 词：dynamic energy band modulation pd ion migration nonlinear photonic memristor wse homojunctionthis computational spectrometer photonic memristor WSe homojunction high spectral resolution 

分 类 号：O43[机械工程—光学工程]