Title :
Study of a 87Rb Vapour Discriminator with Laser Pumping for a High Stability Onboard Frequency Standard
Author :
Besedina, A. ; Berezovskaya, O. ; Gevorkyan, A. ; Zholnerov, V.
Author_Institution :
, St. Petersburg
fDate :
May 29 2007-June 1 2007
Abstract :
We report on our progress towards the realization of a high-performance laser-pumped rubidium vapour-cell atomic frequency standard for satellite navigation. The conversion process of the laser´s FM-AM noise which degrades the SNR of a gas-cell discriminator with 87Rb and buffer gases was experimentally studied as a function of laser´s intensity and its frequency using the double radio-optical resonance scheme (DROR) operating on two optical transitions: |2>-2P3/2 or |1>-2P3/2. The new method is proposed and realized for fine tuning of a laser frequency to the value corresponding to the minimum value of FM-AM conversion noise. While using this method, the RFS breadboard is built.
Keywords :
atomic clocks; frequency stability; frequency standards; laser noise; laser transitions; laser tuning; magnetic double resonance; optical double resonance; optical pumping; rubidium; satellite navigation; RFS breadboard; Rb; buffer gases; conversion process; double radio-optical resonance scheme; gas-cell discriminator; high stability onboard frequency standard; laser FM-AM noise; laser frequency tuning; laser intensity; laser pumping; optical transitions; rubidium vapour discriminator; satellite navigation; Frequency conversion; Gas lasers; Laser excitation; Laser noise; Laser stability; Laser transitions; Optical buffering; Optical frequency conversion; Optical noise; Pump lasers;
Conference_Titel :
Frequency Control Symposium, 2007 Joint with the 21st European Frequency and Time Forum. IEEE International
Conference_Location :
Geneva
Print_ISBN :
978-1-4244-0646-3
Electronic_ISBN :
1075-6787
DOI :
10.1109/FREQ.2007.4319144
