Preliminary results of the frequency comparison between the iodine stabilized He-Ne lasers at 633 nm from IMGC and IFA-IFTAR

Fabrizio Bertinetto; Paolo Cordiale; Gheorghe Popescu

doi:10.1117/12.203479

8 March 1995 Preliminary results of the frequency comparison between the iodine stabilized He-Ne lasers at 633 nm from IMGC and IFA-IFTAR

Fabrizio Bertinetto, Paolo Cordiale, Gheorghe Popescu

Author Affiliations +

Proceedings Volume 2461, ROMOPTO '94: Fourth Conference in Optics; (1995) https://doi.org/10.1117/12.203479
Event: ROMOPTO '94: 4th Conference on Optics, 1994, Bucharest, Romania

Abstract

Preliminary results of an international comparison between the He-Ne lasers stabilized to ¹²⁷I₂ at 633 nm of the Instituto di Metrologia G. Colonnetti (IMGC) and the Institute of Atomic Physics-IFTAR (IFA-IFTAR), Department of Lasers are reported. The mean frequency difference, considering the hyperfine structure components d, e, f and g, resulted as (Delta) (nu) equals (nu) _IMGC4/5 - (nu) _R0.2 equals (-3.8 +/- 5.7) kHz, or as relative value reported to the laser frequency as (Delta) (nu) /(nu) _o equals (0.8 +/- 1.2) X 10^-11. The frequency stability, expressed as the Allan variance of the beat note between the two lasers, resulted 3.65 X 10^-12 for 100 s sampling time.

Citation Download Citation

Fabrizio Bertinetto, Paolo Cordiale, and Gheorghe Popescu "Preliminary results of the frequency comparison between the iodine stabilized He-Ne lasers at 633 nm from IMGC and IFA-IFTAR", Proc. SPIE 2461, ROMOPTO '94: Fourth Conference in Optics, (8 March 1995); https://doi.org/10.1117/12.203479

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