Intercomparison of the 127I2 stabilized He-Ne lasers at 633-nm wavelength of the IFA-IFTAR and the BIPM

Gheorghe Popescu; Jean-Marie Chartier; Anick Chartier; Alain Zarka

doi:10.1117/12.203473

8 March 1995 Intercomparison of the ¹²⁷I₂ stabilized He-Ne lasers at 633-nm wavelength of the IFA-IFTAR and the BIPM

Gheorghe Popescu, Jean-Marie Chartier, Anick Chartier, Alain Zarka

Proceedings Volume 2461, ROMOPTO '94: Fourth Conference in Optics; (1995) https://doi.org/10.1117/12.203473
Event: ROMOPTO '94: 4th Conference on Optics, 1994, Bucharest, Romania

Abstract

Results from an international comparison of ¹²⁷I₂ He-Ne stabilized lasers at 633 nm wavelength of the Institute of Atomic Physics-IFTAR, Department of Lasers (IFA-IFTAR), participating with the laser R0.1 and of the Bureau International des Poids et Mesures (BIPM), participating with the laser BIPM7 are reported. The frequency difference determined from the last three measurements resulted as (Delta) (nu) equals (nu) _BIPM7 - (nu) _R0.1 equals (38.2 +/- 1.3) kHz. Parameters which affected the reproducibility of the frequency for the lasers such as modulation width, iodine pressure (temperature) and laser intracavity power were also investigated. The frequency stability, expressed as the relative Allan variance, was measured for sampling times in the interval from 1 s to 1000 s and its value for a sampling time of 100 s resulted as 3.25 X 10^-12.

Citation Download Citation

Gheorghe Popescu, Jean-Marie Chartier, Anick Chartier, and Alain Zarka "Intercomparison of the ¹²⁷I₂ stabilized He-Ne lasers at 633-nm wavelength of the IFA-IFTAR and the BIPM", Proc. SPIE 2461, ROMOPTO '94: Fourth Conference in Optics, (8 March 1995); https://doi.org/10.1117/12.203473

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