Title :
Accuracy of the computer-controlled laser frequency standards based on resolved hyperfine structure of a methane line
Author :
Tyurikov, D.A. ; Gubin, M.A. ; Shelkovnikov, A.S. ; Koval´chuk, E.V.
Author_Institution :
P.N. Lebedev Phys. Inst., Acad. of Sci., Moscow, Russia
fDate :
4/1/1995 12:00:00 AM
Abstract :
Results of 2-year frequency comparisons of our transportable He-Ne laser standard stabilized on a component of the magnetic hyperfine structure (MHFS) of the F22 line of methane λ=3.39 μm, with our stationary laser using resolved recoil doubler as reference are presented. The absolute frequency of the transportable laser measured at PTB (Physikalisch-Technische Bundesanstalt, Braunschweig, Germany), using the radio-optical frequency chain, was transferred to the stationary device. On the basis of the theoretical model of the line shape, the frequency of unperturbed transition has peen calculated
Keywords :
computerised control; computerised instrumentation; frequency measurement; hyperfine structure; measurement standards; molecular beam electric resonance; molecular electronic states; organic compounds; physical instrumentation control; servomechanisms; 3.39 mum; F22 line; PTB; absolute frequency; computer-controlled laser frequency standards; frequency comparisons; magnetic hyperfine structure; methane; methane line; radio-optical frequency chain; resolved hyperfine structure; resolved recoil doubler; stationary laser; transportable He-Ne laser; transportable laser; Frequency synthesizers; Gas lasers; Laser beams; Laser modes; Laser noise; Laser stability; Laser theory; Laser transitions; Resonance; Signal to noise ratio;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
