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Proceedings Paper

UV tunable diode laser source based on an external resonant cavity for OH absorption detection
Author(s): J. S. Gibb; G. Hancock; Vasily L. Kasyutich; G. A.D. Ritchie
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Paper Abstract

A solid-state tunable light source operating at 309-320 nm has been developed based on frequency up conversion of a cooled diode laser. Frequency doubling is achieved with a beta barium borate crystal enclosed in an external bow-tie cavity. The radiation produced is used for absorption detection of hydroxyl radicals generated by microwave discharge. The ultra-violet beam can be scanned 20-30 Ghz by tuning the length of the doubling cavity using a piezoelectric transducer on one of the mirrors and locking the diode laser to the bow-tie cavity. Possible applications of the developed system to the hydroxyl radical detection in atmospheric and chemical dynamics research are discussed.

Paper Details

Date Published: 30 May 2002
PDF: 8 pages
Proc. SPIE 4749, ICONO 2001: Novel Trends in Nonlinear Laser Spectroscopy and Optical Diagnostics and Lasers in Chemistry, Biophysics, and Biomedicine, (30 May 2002); doi: 10.1117/12.468893
Show Author Affiliations
J. S. Gibb, Oxford Univ. (United Kingdom)
G. Hancock, Oxford Univ. (United Kingdom)
Vasily L. Kasyutich, Oxford Univ. and Institute of Molecular and Atomic Physics (Belarus)
G. A.D. Ritchie, Oxford Univ. (United Kingdom)


Published in SPIE Proceedings Vol. 4749:
ICONO 2001: Novel Trends in Nonlinear Laser Spectroscopy and Optical Diagnostics and Lasers in Chemistry, Biophysics, and Biomedicine

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