Title :
Portable He-Ne/CH/sub 4/ frequency standard on cold particles
Author :
Bagayev, S.N. ; Dmitriyev, A.K. ; Ohm, A.E. ; Pokasov, P.V. ; Skvortsov, B.N.
Author_Institution :
Inst. of Laser Phys., Acad. of Sci., Novosibirsk, Russia
fDate :
June 27 1994-July 1 1994
Abstract :
The data on investigation of metrological characteristics of transportable He-Ne/CH/sub 4/ frequency standard (/spl lambda/=3.39 /spl mu/m) with the long-term stability of 5/spl middot/10/sup -15/ are presented. As the frequency reference we used the second-order Doppler-free resonance of cold CH/sub 4/-molecules with the halfwidth of 5 kHz on the 7-6 transition of magnetic hyperfine structure of methane. The results of comparison of the laser frequency standard with the frequency of unperturbed 7-6 transition and cesium beam are presented.<>
Keywords :
frequency measurement; gas lasers; laser frequency stability; measurement standards; molecular hyperfine structure; organic compounds; 3.39 mum; 5 kHz; He-Ne; He-Ne/CH/sub 4/ frequency standard; cold particles; frequency reference; long-term stability; magnetic hyperfine structure; methane; metrological characteristics; portable frequency standard; second-order Doppler-free resonance; Absorption; Frequency; Gas lasers; Mirrors; Optical recording; Optical resonators; Optical saturation; Resonance;
Conference_Titel :
Precision Electromagnetic Measurements, 1994. Digest., 1994 Conference on
Conference_Location :
Boulder, CO, USA
Print_ISBN :
0-7803-1984-2
DOI :
10.1109/CPEM.1994.333399
