Near-infrared broad-band cavity enhanced absorption spectroscopy using a superluminescent light emitting diode

被引：21

作者：

Denzer, W. ^{[1
,2
]}

Hamilton, M. L. ^{[1
]}

Hancock, G. ^{[1
]}

Islam, M. ^{[3
]}

Langley, C. E. ^{[1
]}

Peverall, R. ^{[1
]}

Ritchie, G. A. D. ^{[1
]}

机构：

[1] Univ Oxford, Dept Chem, Phys & Theoret Chem Lab, Oxford OX1 3QZ, England

[2] Univ Oxford, Oxford Med Diagnost Ltd, Avacta Grp Plc, Oxford OX5 1PF, England

[3] Univ Teesside, Sch Sci & Technol, Middlesbrough TS1 3BA, Cleveland, England

来源：

ANALYST | 2009年 / 134卷 / 11期

基金：

英国工程与自然科学研究理事会;

关键词：

SUPERCONTINUUM RADIATION; 1,3-BUTADIENE; GAS; ISOPRENE; ACETONE; BLOOD;

D O I：

10.1039/b916807a

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A fibre coupled near-infrared superluminescent light emitting diode that emits similar to 10mW of radiation between 1.62 and 1.7 mu m is employed in combination with a broad-band cavity enhanced spectrometer consisting of a linear optical cavity with mirrors of reflectivity similar to 99.98% and either a dispersive near-infrared spectrometer or a Fourier transform interferometer. Results are presented on the absorption of 1,3-butadiene, and sensitivities are achieved of 6.1 x 10(-8) cm(-1) using the dispersive spectrometer in combination with phase-sensitive detection, and 1.5 x 10(-8) cm(-1) using the Fourier transform interferometer (expressed as a minimum detectable absorption coefficient) over several minutes of acquisition time.

引用

页码：2220 / 2223

页数：4

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