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Proceedings Paper

Measurement of iodine purity in absorption cells for laser frequency stabilization
Author(s): Jan Hrabina; František Petru; Petr Jedlička; Ondřej Číp; Josef Lazar
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Paper Abstract

In the contribution we present a system for measurement of iodine purity by means excitation of a selected strong transition, measurement of induced fluorescence and evaluation by the Stern-Volmer formula. The arrangement is based on a pumping Ar-ion laser tuned to the transition of interest but its linewidth far exceeds the transition. Frequency noise of the laser is effectivelly reduced by monitoring the fluorescence in a second, reference iodine cell and together with monitoring of the laser power enables cancelation of the frequency noise influence which generates errors by demodulating on the absorption profile. The level of the scattered light is subtracted as well. All the measured data are digitally processed and the experiment is fully computer controlled.

Paper Details

Date Published: 25 April 2007
PDF: 7 pages
Proc. SPIE 6606, Advanced Laser Technologies 2006, 66060B (25 April 2007); doi: 10.1117/12.729513
Show Author Affiliations
Jan Hrabina, Institute of Scientific Instruments (Czech Republic)
Brno Univ. of Technology (Czech Republic)
František Petru, Institute of Scientific Instruments (Czech Republic)
Petr Jedlička, Institute of Scientific Instruments (Czech Republic)
Ondřej Číp, Institute of Scientific Instruments (Czech Republic)
Josef Lazar, Institute of Scientific Instruments (Czech Republic)

Published in SPIE Proceedings Vol. 6606:
Advanced Laser Technologies 2006
Dan C. Dumitras; Maria Dinescu; Vitally I. Konov, Editor(s)

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