Title :
Absolute frequency measurement of the cesium D/sub 2/ line
Author :
Guilin Wu ; Wang-Yau Cheng ; Jow-Tsong Shy
Author_Institution :
Dept. of Phys., Nat. Tsing Hua Univ., Hsinchu, Taiwan
Abstract :
We describe a scheme of absolute frequency measurement of the cesium-stabilized diode laser at 852 nm based on the absolute frequency standard of /sup 87/Rb at 780 nm and well stabilized CO/sub 2/ laser at 9.23 /spl mu/m. The frequency of the CO/sub 2/ laser is stabilized to the center of the 4.3-/spl mu/m saturated fluorescence with frequency instability of 5 kHz. Two diode lasers are stabilized to the center of D/sub 2/ saturated absorption line of Cs at 852 nm and to the center of D/sub 2/ line of /sup 87/Rb at 780 nm with accuracy about 30 kHz, respectively. The sum frequency of the 852 nm and 9.23 /spl mu/m radiation is beated against the 780 nm radiation to obtain the absolute frequency of the Cs D/sub 2/ line. The sum-frequency generation and beat frequency experiment will be finished in the near future and reported in the conference.
Keywords :
caesium; carbon compounds; fluorescence; frequency standards; laser frequency stability; measurement by laser beam; /sup 87/Rb; 30 kHz; 4.3 mum; 4.3-/spl mu/m saturated fluorescence; 5 kHz; 780 nm; 780 nm radiation; 852 nm; 9.23 /spl mu/m; 9.23 /spl mu/m radiation; 9.23 mum; CO/sub 2/; CO/sub 2/ laser; Cs; Cs D/sub 2/ line; Cs stabilized diode laser; D/sub 2/ saturated absorption line; Rb; absolute frequency measurement; absolute frequency standard; beat frequency; frequency instability; sum-frequency generation; Absorption; Band pass filters; Diode lasers; Fluorescence; Frequency measurement; Laser excitation; Laser stability; Laser theory; Lenses; Temperature;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2000 Conference on
Conference_Location :
Sydney, NSW, Australia
Print_ISBN :
0-7803-5744-2
DOI :
10.1109/CPEM.2000.850944