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 powere...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.展开更多
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)+7 种基金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 SciencesShanghai Human Resources and Social Security Bureau(2022670)China Postdoctoral Science Foundation(2023T160661,2022TQ0353and 2022M713261).
文摘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.
