Title :
Transportable He-Ne/CH4 optical frequency standard and absolute measurements of its frequency
Author :
Gubin, M.A. ; Tyurikov, D.A. ; Shelkovnikov, A.S. ; Chuk, E. V Koval ; Kramer, G. ; Lipphardt, B.
Author_Institution :
Lebedev (P.N.) Phys. Inst., Moscow, Russia
fDate :
12/1/1995 12:00:00 AM
Abstract :
A new version of a transportable double-mode He-Ne/CH4 laser (3.39 μm) stabilized on the resolved hyperfine structure (HFS) of the F2(2) methane line was designed at Lebedev Physical Institute. Absolute frequency measurements of the laser were made at the radio-optical frequency chain of Physikalisch-Technische Bundesanstalt, Braunschweig, Germany (PTB). Various reasons for frequency shifts were investigated. Computer processing of the observed line shape was used to calculate the nonperturbed frequency of the central component of HFS
Keywords :
frequency measurement; gas lasers; helium; hyperfine structure; measurement standards; neon; optical saturable absorption; organic compounds; spectral line shift; 3.39 mum; F2(2) methane line; He-Ne; absolute frequency measurements; central component; computer processing; frequency shifts; line shape was used; nonperturbed frequency; radio-optical frequency chain; resolved hyperfine structure; saturated absorption; saturated dispersion; transportable He-Ne/CH4 optical frequency standard; transportable double-mode He-Ne/CH4 laser; Absorption; Frequency; Frequency measurement; Laser beams; Laser mode locking; Laser modes; Laser stability; Laser theory; Optical feedback; Optical mixing; Optical saturation; Resonance;
Journal_Title :
Quantum Electronics, IEEE Journal of
