中国计量大学学报2025，Vol.36Issue(4)：512-520,9.DOI:10.3969/j.issn.2096-2835.2025.04.002
基于单光子雪崩光电二极管的时间门控拉曼光谱仪
A time-gated Raman spectrometer based on the single-photon avalanche diode
摘要
Abstract
Aims:Fluorescence leads to low signal-to-noise ratio(SNR)and obscured characteristic peaks in Raman spectroscopy,while traditional detection methods based on image sensors such as CCD and CMOS are not able to effectively address this problem.Methods:A time-gated Raman spectroscopy detection system based on single-photon avalanche photodiodes(SPAD)was developed.Based on the time difference between Raman scattered light and fluorescence emitted light,the system adopted a 532 nm pulsed laser and single-photon avalanche photodiodes and integrated time-gating technology to accurately capture Raman signals and suppress fluorescence interference.Minerals including silicon wafers,rhodonite and rose quartz were tested as samples and were compared with a commercial HORIBA Raman spectrometer.Results:The constructed system achieved a 100％recognition of Raman characteristic peaks;and the peak-to-baseline ratio(PBR)was increased by up to 31 times.Conclusions:This technology demonstrates strong capability in suppressing fluorescence background,providing a highly promising new detection method for the analysis of mineral samples.关键词
拉曼光谱仪/时间门控/荧光抑制/单光子雪崩二极管Key words
Raman spectrometer/time gating/fluorescence suppression/single-photon avalanche diode分类
机械制造引用本文复制引用
邵海潮,李萌,赵天琦,占春连,林贤锋,王靖翔..基于单光子雪崩光电二极管的时间门控拉曼光谱仪[J].中国计量大学学报,2025,36(4):512-520,9.基金项目
国家自然科学基金项目(No.61904169),浙江省自然科学基金项目(No.LY22F040003),浙江省科技计划项目(No.2024C01078) （No.61904169）
