UV tunable diode laser source based on an external resonant cavity for OH absorption detection

J. S. Gibb; G. Hancock; Vasily L. Kasyutich; G. A.D. Ritchie

doi:10.1117/12.468893

30 May 2002 UV tunable diode laser source-based on an external resonant cavity for OH absorption detection

J. S. Gibb, G. Hancock, Vasily L. Kasyutich, G. A.D. Ritchie

Proceedings Volume 4749, ICONO 2001: Novel Trends in Nonlinear Laser Spectroscopy and Optical Diagnostics and Lasers in Chemistry, Biophysics, and Biomedicine; (2002) https://doi.org/10.1117/12.468893
Event: XVII International Conference on Coherent and Nonlinear Optics (ICONO 2001), 2001, Minsk, Belarus

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.

Citation Download Citation

J. S. Gibb, G. Hancock, Vasily L. Kasyutich, and G. A.D. Ritchie "UV tunable diode laser source-based on an external resonant cavity for OH absorption detection", Proc. SPIE 4749, ICONO 2001: Novel Trends in Nonlinear Laser Spectroscopy and Optical Diagnostics and Lasers in Chemistry, Biophysics, and Biomedicine, (30 May 2002); https://doi.org/10.1117/12.468893

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