| 近红外光腔衰荡光谱系统设计及研究 |
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| 引用本文： | 周家成,徐学哲,雷佳捷,方波,赵卫雄,张为俊.近红外光腔衰荡光谱系统设计及研究[J].装备环境工程,2019,16(6):25-29. |
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| 作者姓名： | 周家成 徐学哲 雷佳捷 方波 赵卫雄 张为俊 |
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| 作者单位： | 中国科学院 安徽光学精密机械研究所,合肥 230031;中国科学技术大学,合肥 230026;中国科学院 安徽光学精密机械研究所,合肥,230031;南京信息工程大学,南京,210044 |
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| 摘 要： | 目的搭建一套近红外光腔衰荡光谱测量系统,实现水汽吸收的探测。方法通过测量有无样品存在时的衰荡时间,实现腔内介质吸收的探测。通过测量空腔衰荡时间,计算腔镜反射率。通过测量不同浓度的水汽吸收,验证系统是否可用于分子吸收的测量。结果该装置的空腔衰荡时间约为3.75μs,对应的腔镜反射率为99.982%,有效吸收光程为1.1 km。测量了6627.7 cm~(-1)处水汽的吸收,结果与HITRAN数据库一致。结合文献报道结果和HITRAN数据库吸收谱线,模拟得到了NH_3、C_2H_2、HO_2自由基在6625～6626 cm~(-1)范围内的吸收系数。结论该装置实现了水汽吸收的探测,在该装置的激光器工作波长范围内,可应用于NH_3、C_2H_2、HO_2自由基的实时探测。
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| 关 键 词： | 光谱学 光腔衰荡光谱技术 触发电路 衰荡时间 HO2自由基 |
| 收稿时间： | 2018/12/25 0:00:00 |
| 修稿时间： | 2019/6/25 0:00:00 |
Design and Research of Near-infrared Cavity Ring-down Spectroscopy System |
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| ZHOU Jia-cheng,XU Xue-zhe,LEI Jia-jie,FANG Bo,ZHAO Wei-xiong and ZHANG Wei-jun.Design and Research of Near-infrared Cavity Ring-down Spectroscopy System[J].Equipment Environmental Engineering,2019,16(6):25-29. |
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| Authors: | ZHOU Jia-cheng XU Xue-zhe LEI Jia-jie FANG Bo ZHAO Wei-xiong and ZHANG Wei-jun |
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| Institution: | 1.Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China; 2. University of Science and Technology of China, Hefei 230026, China,1.Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China,3. Nanjing University of Information Science and Technology, Nanjing 210044, China,1.Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China; 2. University of Science and Technology of China, Hefei 230026, China,1.Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China and 1.Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China; 2. University of Science and Technology of China, Hefei 230026, China |
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| Abstract: | |
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| Keywords: | spectroscopy CRDS trigger circuit ring-down time HO2 free radical |
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