Open AccessExperimental investigation of CPT atomic frequency standard
Author(s) -
Runchang Du,
Jiehua Chen,
Liu Chao-yang,
Gu Sihong
Publication year - 2009
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.58.6117
Subject(s) - frequency standard , atomic clock , microwave , laser , frequency drift , voltage , optics , physics , atomic physics , materials science , optoelectronics , phase noise , phase locked loop , quantum mechanics
A small sized and low power consumption physical package of CPT atomic frequency standard developed by us is introduced in the paper. The experiments of locking laser frequency and microwave frequency were carried out and realized with the physical package. By locking laser frequency to atomic absorption spectrum through current negative feedback and locking microwave frequency to electromagnetic induced transparency resonance peak through voltage negative feedback respectively, the locking of the clock frequency of this laboratorial desktop experimental CPT frequency standard is realized. The measurement of the frequency stability of this experimental system demonstrate a performance better than 5×10-11τ-1/2 1—200 s.