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题名: Cavity ring-down spectroscopy in the liquid phase
作者: Xu, SC;  Sha, GH;  Xie, JC
刊名: REVIEW OF SCIENTIFIC INSTRUMENTS
发表日期: 2002-02-01
DOI: 10.1063/1.1430729
卷: 73, 期:2, 页:255-258
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology ;  Physical Sciences
类目[WOS]: Instruments & Instrumentation ;  Physics, Applied
研究领域[WOS]: Instruments & Instrumentation ;  Physics
英文摘要: A new application for cavity ring-down spectroscopic (CRDS) technique using a pulsed polarized light source has been developed in the absorption measurement of liquids for "colorless" organic compounds using both a single sample cell and double sample cells inserted in an optical cavity at Brewster angle. At present an experimental capability of measuring absorption coefficients as small as 2-5x10(-7) cm(-1) has been demonstrated by measurement of the absorption baselines. The first spectra for CRDS in the liquid phase, the C-H stretching fifth vibrational overtones of benzene in the pure liquid and hexane solution are obtained. The optical absorption length for liquids in both a single sample cell and double sample cells of 1 cm length is up to 900 cm due to multipass of light within an optical cavity. Compared to the thermal lens and optoacoustic spectroscopic techniques, the sensitivity for CRDS mainly depends on the optical absorption path of the sample (single passing path of the sample times multipass times), is not determined by the laser power and the length of the sample cell. The absolute absorption coefficient and band intensity for the sample are determined directly by the spectroscopy. (C) 2002 American Institute of Physics.
关键词[WOS]: THERMAL LENSING SPECTROSCOPY ;  OVERTONE SPECTROSCOPY ;  ABSORPTION SPECTROSCOPY ;  VISIBLE REGION ;  BENZENE
语种: 英语
WOS记录号: WOS:000173853700002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139208
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Acad Sinica, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China

Recommended Citation:
Xu, SC,Sha, GH,Xie, JC. Cavity ring-down spectroscopy in the liquid phase[J]. REVIEW OF SCIENTIFIC INSTRUMENTS,2002,73(2):255-258.
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