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Proceedings Paper

Comparison of 127I2-stabilized frequency-doubled Nd: YAG lasers and evaluation of frequency shifts caused by iodine cells
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Paper Abstract

We present results of measurement of purity of a set of iodine cells made at our institute. The purity was tested by improved method based on measurement of induced fluorescence and evaluation by the Stern-Volmer formula. The reproducibility of the fluorescence detection system was improved by introducing of additional compensation for the pumping laser spectral and power instabilities. Frequency-doubled Nd:YAG lasers stabilized with these cells were compared to evaluate their frequency shifts. The absolute frequencies of selected iodine hyperfine transitions were measured in direct laser frequency comparison with the reproducibility well below the kHz level. The results indicating the iodine cell purity are presented with relation to the absolute frequency shifts. This not only highlights the influence of iodine cell quality onto the stability and absolute frequency of laser etalons but also shows the way towards improvements of the iodine cell manufacturing technology.

Paper Details

Date Published: 25 April 2008
PDF: 6 pages
Proc. SPIE 6995, Optical Micro- and Nanometrology in Microsystems Technology II, 69950O (25 April 2008); doi: 10.1117/12.780213
Show Author Affiliations
Jan Hrabina, 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. 6995:
Optical Micro- and Nanometrology in Microsystems Technology II
Christophe Gorecki; Anand Krishna Asundi; Wolfgang Osten, Editor(s)

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