Accession Number:
ADA485242
Title:
Theoretical and Experimental Study of Light Shift in a CPT-Based RB Vapor Cell Frequency Standard
Descriptive Note:
Conference paper
Corporate Author:
AGILENT TECHNOLOGIES PALO ALTO CA ELECTRONIC RESEARCH LAB
Personal Author(s):
Report Date:
2001-01-01
Pagination or Media Count:
14.0
Abstract:
One of the important subjects in coherent-population- trapping-based CPT-based vapor cell frequency standards is the light shift ac Stark shift. We calculate the light shift using a numerical method and perturbation approximation. Experimentally, we measure light shift using a pair of phase-locked diode lasers as well as a frequency-modulated diode laser. There is good agreement between theory and experiment. A method of controlling light shift in CPT-based frequency standards is proposed and implemented in Agilent Laboratories. The short-term stability of our CPT-based rubidium vapor cell frequency standard is measured as 1.3 x 10-12 tau -12, which is limited by the phase noise of the reference local oscillator used.
Descriptors:
Subject Categories:
- Lasers and Masers
- Electricity and Magnetism