Observation of Doppler sidebands of a laser-cooled Ca+ ion by using a low-temperature-operated laser diode |
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| Authors: | S Urabe M Watanabe H Imajo K Hayasaka U Tanaka R Ohmukai |
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| Institution: | (1) Kansai Advanced Research Center, Communications Research Laboratory, 588-2, Iwaoka, Nishi-ku, Kobe 651-24, Japan (Fax: +81-78/969-2114, E-mail: urabe@crl.go.jp), JP |
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| Abstract: | 1/2 -D5/2 electric-quadrupole-allowed transitions of a laser-cooled Ca+ ion in a small rf trap. The electron shelving method was used to measure the absorption spectrum of the electric-quadrupole-allowed
transitions, and the motional sidebands due to the secular motion of the ion in the harmonic potential well of the rf trap
were completely resolved. The effective temperature of the ion, estimated by comparing the observed sideband intensities with
the theoretical ones, was less than 4.4 mK. This result is in good agreement with that obtained from the analysis of the linewidth
measurement.
Received: 18 March 1998 |
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| Keywords: | PACS: 32 80 Pj |
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