DocumentCode :
1083008
Title :
FM eliminated CH4 locked frequency stabilization of 3.39 µm He-Ne laser in dual feedback control
Author :
Nakazawa, Masataka ; Nakamura, Jun-ichi ; Musha, Toshimitsu
Author_Institution :
NTT Corp., Ibaraki, Japan
Volume :
17
Issue :
1
fYear :
1981
fDate :
1/1/1981 12:00:00 AM
Firstpage :
103
Lastpage :
108
Abstract :
The frequency of the 3.39 μm He-Ne laser was locked to the CH4 saturated absorption line by means of integral-proportional feedback control, i.e., dual feedback control. The frequency modulation was applied by a vibrating mirror placed outside a laser cavity, obtaining a modulation-free laser beam with a stabilized frequency. The long-term stability achieved under integral feedback control was about 
, which was further improved to 
under dual feedback control. The Allan variance measured by the photomixing technique was 
at an average time 100 s.
, which was further improved to under dual feedback control. The Allan variance measured by the photomixing technique was at an average time 100 s.Keywords :
Feedback systems; Infrared lasers; Laser stability; Noble-gas lasers; Absorption; Fabry-Perot; Feedback control; Frequency modulation; Laser beams; Laser feedback; Laser mode locking; Laser stability; Optical modulation; Spectroscopy;
fLanguage :
English
Journal_Title :
Quantum Electronics, IEEE Journal of
Publisher :
ieee
ISSN :
0018-9197
Type :
jour
DOI :
10.1109/JQE.1981.1070622
Filename :
1070622
Link To Document :
