Improvement of Frequency Locking Algorithm for Atomic Frequency Standards

The authors describe a novel method of frequency locking algorithm for atomic frequency standards. The new algorithm for locking the microwave frequency to the Ramsey resonance is compared with the old one that had been employed in the cesium atomic beam frequency standards such as NIST-7 and KRISS-...

Full description

Saved in:
Bibliographic Details
Published in:Japanese Journal of Applied Physics 2010-09, Vol.49 (9), p.096601-096601-4
Main Authors: Park, Young-Ho, Kang, Hoonsoo, Lee, Soo Heyong, Park, Sang Eon, Lee, Jong Koo, Lee, Ho Seong, Kwon, Taeg Yong
Format: Article
Language:English
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The authors describe a novel method of frequency locking algorithm for atomic frequency standards. The new algorithm for locking the microwave frequency to the Ramsey resonance is compared with the old one that had been employed in the cesium atomic beam frequency standards such as NIST-7 and KRISS-1. Numerical simulations for testing the performance of the algorithm show that the new method has a noise filtering performance superior to the old one by a factor of 1.2 for the flicker signal noise and 1.4 for random-walk signal noise. The new algorithm can readily be used to enhance the frequency stability for a digital servo employing the slow square wave frequency modulation.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.49.096601