Continuous-wave, single-frequency 229  nm laser source for laser cooling of cadmium atoms

Continuous-wave output at 229 nm for the application of laser cooling of Cd atoms was generated by the fourth harmonic using two successive second-harmonic generation stages. Employing a single-frequency optically pumped semiconductor laser as a fundamental source, 0.56 W of output at 229 nm was obs...

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Bibliographic Details
Published inOptics letters Vol. 41; no. 4; p. 705
Main Authors Kaneda, Yushi, Yarborough, J M, Merzlyak, Yevgeny, Yamaguchi, Atsushi, Hayashida, Keitaro, Ohmae, Noriaki, Katori, Hidetoshi
Format Journal Article
LanguageEnglish
Published United States 15.02.2016
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Summary:Continuous-wave output at 229 nm for the application of laser cooling of Cd atoms was generated by the fourth harmonic using two successive second-harmonic generation stages. Employing a single-frequency optically pumped semiconductor laser as a fundamental source, 0.56 W of output at 229 nm was observed with a 10-mm long, Brewster-cut BBO crystal in an external cavity with 1.62 W of 458 nm input. Conversion efficiency from 458 nm to 229 nm was more than 34%. By applying a tapered amplifier (TA) as a fundamental source, we demonstrated magneto-optical trapping of all stable Cd isotopes including isotopes Cd111 and Cd113, which are applicable to optical lattice clocks.
ISSN:1539-4794
DOI:10.1364/OL.41.000705