Frequency-modulation spectroscopy of rubidium atoms with an AlGaAs diode laser
Frequency-modulation (FM) spectroscopy has been performed on the D/sub 2/ transitions of rubidium atoms with an AlGaAs diode laser at 780 nm. Doppler-broadened hyperfine-structure transitions of /sup 85/Rb and /sup 87/Rb were resolved with no residual amplitude-modulation-induced background signal by modulating the injection current of the laser diode at a low frequency (20--50 MHz) compared with the Doppler width. To obtain Doppler-free spectra, we combined FM spectroscopy with saturation spectroscopy. The results show that the FM spectroscopy technique is sensitive and should be useful for high-resolution spectroscopy, although the resolution was instrument limited and unusual double peaks were observed.
- Research Organization:
- Department of Physics, Faculty of Education, Kagawa University, Kagawa 760, Japan
- OSTI ID:
- 5714180
- Journal Information:
- Opt. Lett.; (United States), Vol. 12:11
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
RUBIDIUM
HYPERFINE STRUCTURE
LASER SPECTROSCOPY
MODULATION
RUBIDIUM 85
RUBIDIUM 87
SEMICONDUCTOR LASERS
TEMPERATURE CONTROL
ALKALI METAL ISOTOPES
ALKALI METALS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CONTROL
ELEMENTS
INTERMEDIATE MASS NUCLEI
ISOTOPES
LASERS
METALS
NUCLEI
ODD-EVEN NUCLEI
RADIOISOTOPES
RUBIDIUM ISOTOPES
SEMICONDUCTOR DEVICES
SPECTROSCOPY
STABLE ISOTOPES
YEARS LIVING RADIOISOTOPES
640302* - Atomic
Molecular & Chemical Physics- Atomic & Molecular Properties & Theory