Title :
Phase-locking of extended-cavity diode lasers with frequency offset of 9.2 GHz
Author :
Kwon, T.Y. ; Kurosu, T. ; Koga, Y. ; Ohshima, S.
Author_Institution :
Nat. Res. Lab. of Metrol., Ibaraki, Japan
Abstract :
We constructed a laser system for the use in atomic velocity-selection through stimulated Raman transition in a cesium atomic fountain clock. Two extended-cavity diode lasers were phase-locked with frequency offset of 9.2 GHz. The loop bandwidth of phase-locking and phase error variance were about 400 kHz and 7.4/spl times/10/sup -2/ rad/sup 2/, respectively.
Keywords :
atomic clocks; caesium; frequency standards; laser cavity resonators; laser frequency stability; optical phase locked loops; optical saturable absorption; semiconductor lasers; 400 kHz; Allan variance; Cs; atomic velocity-selection; beat spectrum; cesium atomic fountain clock; extended-cavity diode lasers; frequency offset; loop bandwidth; phase error variance; phase-locking; saturated absorption transition; stimulated Raman transition; Atom lasers; Atomic beams; Atomic clocks; Atomic measurements; Bandwidth; Clouds; Diode lasers; Frequency; Phase detection; Phase estimation;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2000 Conference on
Conference_Location :
Sydney, NSW, Australia
Print_ISBN :
0-7803-5744-2
DOI :
10.1109/CPEM.2000.851138
