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|Title:||A pulsed laser source using stimulated Raman scattering and difference frequency mixing: Remote sensing of methane in air|
|Citation:||Optics Communications, 1995; 120(5-6):307-310|
|D.G. Lancaster and J.M. Dawes|
|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).|
|Rights:||Copyright 1995 Elsevier Science B.V. All rights reserved.|
|Appears in Collections:||Aurora harvest|
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