Spectra of 42^S1/2→3^2D5/2 Transitions of a Single Trapped 40^Ca＋ Ion

We investigate the spectra of the electric quadrupole 42^S1/2→3^2D5/2 transitions in a single 40^Ca＋ ion confined in a home-built linear trap. We probe the transitions with an ultra-narrow bandwidth laser at 729nm. In a weak magnetic field, the quadrupole transition splits into ten components with t...

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Bibliographic Details
Published in:中国物理快报：英文版 2015 (1), p.39-41
Main Author: GONG Shi-Jie ZHOU Fei WU Hao-Yu WAN Wei CHEN Liang FENG Mang
Format: Article
Language:English
Subjects:
多普勒冷却
弱磁场
拉比振荡
激光器
电四极
离子光谱
离子囚禁
钙
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Summary:We investigate the spectra of the electric quadrupole 42^S1/2→3^2D5/2 transitions in a single 40^Ca＋ ion confined in a home-built linear trap. We probe the transitions with an ultra-narrow bandwidth laser at 729nm. In a weak magnetic field, the quadrupole transition splits into ten components with the maximal line strength proportional to their squared Clebsch-Gordan factors. In a magnetic field of the order of Gauss, the observed equidistant sideband reflects the Zeeman substructure modulated by the quantized oscillation due to the secular motion in the trap. The temperature of the trapped ion can be determined by the envelope of the sideband spectrum. We also demonstrate the Rabi oscillation in a carrier transition after the ion has been Doppler cooled, which can be fitted by the model with the thermal state of motion.
ISSN:0256-307X
1741-3540