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Detection of CH4 in the mid-IR using difference frequency generation with tunable diode laser spectroscopy

Armstrong, I. and Johnstone, W. and Duffin, K. and Lengden, Michael and Chakraborty, Arup Lal and Ruxton, Keith C. (2010) Detection of CH4 in the mid-IR using difference frequency generation with tunable diode laser spectroscopy. Journal of Lightwave Technology, 28 (10). pp. 1435-1442. ISSN 0733-8724

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Abstract

This paper demonstrates detection of methane using tunable diode laser spectroscopy (TDLS) through difference frequency generation (DFG) in order to address fundamental rotational-vibrational absorption lines, located around 3404 nm. Direct detection confirms that wavelength referencing of recovered lineshapes, developed for Near infra-red (Near-IR) systems, has been successfully transferred to the presented Middle infra-red (Mid-IR) system. Traditional 1f and 2f TDLS with WMS detection regimes are also functionally confirmed analogous to their Near-IR equivalents.

Item type: Article
ID code: 14763
Keywords: carbon compounds, chemical variables measurement, measurement by laser beam, optical harmonic generation, Electrical engineering. Electronics Nuclear engineering, Atomic and Molecular Physics, and Optics
Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
Department: Faculty of Engineering > Electronic and Electrical Engineering
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 16 Jun 2010 15:12
    Last modified: 11 Apr 2014 08:15
    URI: http://strathprints.strath.ac.uk/id/eprint/14763

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