A pulsed laser source using stimulated Raman scattering and difference frequency mixing: Remote sensing of methane in air

Lancaster, D.; Dawes, J.

doi:10.1016/0030-4018(95)00429-C

A pulsed laser source using stimulated Raman scattering and difference frequency mixing: Remote sensing of methane in air

Date

1995

Authors

Lancaster, D.

Dawes, J.

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Journal article

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Optics Communications, 1995; 120(5-6):307-310

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D.G. Lancaster and J.M. Dawes

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10.1016/0030-4018(95)00429-C

Abstract

Mid-infrared radiation at 3.43 μm is generated by difference frequency mixing a 1.064 μm Nd:YAG laser with a methane gas Raman shifted Nd:YAG (1.064 μm) laser at 1.54 μm in KTiOAsO₄(KTA). Using this pulsed (7 ns), moderate energy (1 mJ) source we demonstrate the optical detection of methane in air and measure an absorption coefficient of 1.2cm⁻¹ atm⁻¹. Additional source characteristics include an intrinsic wavelength stability defined by the methane Raman vibrational frequency and a moderate linewidth (1.5 cm⁻¹).

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https://doi.org/10.1016/0030-4018(95)00429-c

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http://hdl.handle.net/2440/59851

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A pulsed laser source using stimulated Raman scattering and difference frequency mixing: Remote sensing of methane in air

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