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A calibration method for broad-bandwidth cavity enhanced absorption spectroscopy performed with supercontinuum radiation

Laurila, T. and Burns, I. S. and Hult, J. and Miller, J. H. and Kaminski, C. F. (2011) A calibration method for broad-bandwidth cavity enhanced absorption spectroscopy performed with supercontinuum radiation. Applied Physics B: Lasers and Optics, 102 (2). pp. 271-278. ISSN 0946-2171

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Abstract

An efficient calibration method has been developed for broad-bandwidth cavity enhanced absorption spectroscopy. The calibration is performed using phase shift cavity ring-down spectroscopy, which is conveniently implemented through use of an acousto-optic tunable filter (AOTF). The AOTF permits a narrowband portion of the SC spectrum to be scanned over the full high-reflectivity bandwidth of the cavity mirrors. After calibration the AOTF is switched off and broad-bandwidth CEAS can be performed with the same light source without any loss of alignment to the set-up. We demonstrate the merits of the method by probing transitions of oxygen molecules O-2 and collisional pairs of oxygen molecules (O-2)(2) in the visible spectral range.

Item type: Article
ID code: 33280
Keywords: ring-down spectroscopyOSCOPY, diode-lasers, light, Physics and Astronomy(all), Physics and Astronomy (miscellaneous)
Subjects: UNSPECIFIED
Department: Faculty of Engineering > Chemical and Process Engineering
Technology and Innovation Centre > Continuous Manufacturing and Crystallisation (CMAC)
Depositing user: Pure Administrator
Date Deposited: 14 Sep 2011 13:22
Last modified: 21 May 2015 13:39
Related URLs:
URI: http://strathprints.strath.ac.uk/id/eprint/33280

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