西北师范大学学报（自然科学版）2017，Vol.53Issue(6)：42-46,68,6.DOI:10.16783/j.cnki.nwnuz.2017.06.009
光腔衰荡光谱系统设计与信号分析
System design and signal analysis of cavity ring-down absorption spectroscopy
摘要
Abstract
System design and signal analysis of cavity ring-down spectroscopy(CRDS) with the continuous wave diode laser is discussed in this paper,the main content of this paper include the working principle of the CRDS,the system design and building,the adjustment and analysis of the single mode of the resonator,an algorithm of getting the ring down time is also proposed,at the same time,the eigen ring down curve of the resonator (absorption cell) is measured and the corresponding ring-down time of oscillation is obtained by fitting the resonator ring down curve at different wavelengths and intensities.The experimental results show that the cavity ring-down time can be obtained based on the proposed CRDS system by the proposed algorithm,which can avoid the influence of the light source fluctuation.关键词
光谱学/衰荡强吸收光谱/谐振腔/AOMKey words
spectroscopy/CRDS/resonant cavity/AOM分类
数理科学引用本文复制引用
裴世鑫,雷佳捷,赵卫雄,张为俊..光腔衰荡光谱系统设计与信号分析[J].西北师范大学学报（自然科学版）,2017,53(6):42-46,68,6.基金项目
国家自然科学基金资助项目(91544228) （91544228）
