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Title of Journal: Appl Phys B

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Abbravation: Applied Physics B

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Springer-Verlag

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DOI

10.1016/0045-6039(83)90022-2

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1432-0649

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Rapid and sensitive trace gas detection with conti

Authors: D D Arslanov M Spunei A K Y Ngai S M Cristescu I D Lindsay S T Persijn K J Boller F J M Harren
Publish Date: 2010/09/25
Volume: 103, Issue: 1, Pages: 223-228
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Abstract

A fiberamplified Distributed Bragg Reflector diode laser is used to pump a continuous wave singly resonant Optical Parametric Oscillator OPO The output radiation covers the 3–4 μm with ability of rapid 100 THz/s and broad modehopfree tuning 5 cm−1 Wavelength Modulation Spectroscopy is combined with the OPO to take optimal advantage of the spectral scan speed The sensitivity of the system was determined as 08 ppbv partsperbillion by volume for ethane C2H6 for the absorption peak at 29969 cm−1 recorded in 13 seconds corresponding to a noise equivalent absorption sensitivity NEAS of 12×10−9 cm−1/Hz1/2 A comparison between results using the 1st 2nd and 4th harmonic derivative signal from wavelength modulation was performed The broad continuous tunability was demonstrated by covering 35 cm−1 while recording absorption features of ethane methane and waterThis article is published under an open access license Please check the Copyright Information section for details of this license and what reuse is permitted If your intended use exceeds what is permitted by the license or if you are unable to locate the licence and reuse information please contact the Rights and Permissions team

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