太赫兹科学与电子信息学报2024，Vol.22Issue(8)：823-827,841,6.DOI:10.11805/TKYDA2024126
高分辨太赫兹衰减全反射频域光谱系统
High resolution Attenuated Total Reflection terahertz frequency-domain spectroscopy
摘要
Abstract
Due to the strong absorption of terahertz(THz)by water,the detection of terahertz spectroscopy for aqueous samples faces significant challenges.To address the issue of high-sensitivity detection of aqueous samples using terahertz spectroscopy,this paper proposes and experimentally verifies a high-resolution frequency-domain spectroscopy system based on terahertz Attenuated Total Reflection(ATR).The system employs an innovative optical heterodyne coherent detection technique,achieving excellent dynamic range and resolution performance.Within the range of 0.3 to 1.2 THz,the peak dynamic range exceeds 100 dB,and the frequency resolution reaches up to 100 MHz.The innovative ATR architecture effectively enhances sensitivity,and in experimental measurements of aqueous solutions with different concentrations of α-lactose,the system has realized direct and accurate quantitative detection of the aqueous samples.关键词
高分辨太赫兹频域光谱/相干检测/衰减全反射/α-乳糖Key words
high resolution terahertz frequency domain spectroscopy/coherent detection/Attenuated Total Reflection/α-lactose分类
数理科学引用本文复制引用
方兴,张鹿,张红旗,杨作民,吕治东,余显斌..高分辨太赫兹衰减全反射频域光谱系统[J].太赫兹科学与电子信息学报,2024,22(8):823-827,841,6.基金项目
国家重点研发计划资助项目(2022YFB2903800) （2022YFB2903800）
浙江省"尖兵""领雁"研发攻关计划资助项目(2023C01139) （2023C01139）
国家自然科学基金资助项目(62101483) （62101483）
浙江省自然科学基金资助项目(LQ21F010015) （LQ21F010015）
