Frequency measurements of saturated-fluorescence-stabilized CO2 laser lines: comparison with an OsO4-stabilized CO2 laser standard |
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| Authors: | B. Frech L.F. Constantin A. Amy-Klein O. Phavorin C. Daussy C. Chardonnet M. Mürtz |
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| Affiliation: | Laboratoire de Physique des Lasers, Université Paris 13, Av. J.-B.?Clément, 93430 Villetaneuse, France (Fax: +33-1/49 40-32 00, E-mail: amy@lpl.univ-parisl3.fr), FR
Institut für Angewandte Physik, Universit?t Bonn, Wegelerstr. 8, D-53115 Bonn, Germany (Fax: +49-228/73-3474, E-mail: frech@iap.uni-bonn.de), DE
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| Abstract: | 4 frequency grid, to test the performance of the saturated fluorescence method for CO2 laser frequency stabilization. The Allan variance for the saturated-fluorescence-stabilized CO2 laser reached 60 Hz for an integration time of 300 s. We also performed three absolute measurements of CO2 laser frequencies stabilized by the saturated fluorescence method, with a sub-kHz accuracy. We obtained a 1.7 kHz redshift of the CO2 saturated fluorescence lines, which we attribute essentially to pressure. This is in contradiction with the previous observation of a blueshift [K.L. SooHoo, C. Freed, J.E. Thomas, H.A. Haus: Phys. Rev. Lett. 53, 1437 (1984)]. Furthermore, significant deviations of the measured frequencies from the data of Maki et al. [A.G. Maki, C.-C. Chou, K. Evenson, L.R. Zink, J.T. Shy: J. Mol. Spec. 167, 211 (1994)] demonstrate the need for a new calibration of the CO2 frequency grid. Received: 1 December 1997 |
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| Keywords: | PACS: 06.20.-f 07.57.Ty 33.70.Jg |
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