1. Continuous-wave, single-frequency 229 nm laser source for laser cooling of cadmium atoms
- Author
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Kaneda, Yushi, Yarborough, J. M., Merzlyak, Yevgeny, Yamaguchi, Atsushi, Hayashida, Keitaro, Ohmae, Noriaki, and Katori, Hidetoshi
- Subjects
Physics - Atomic Physics ,Physics - Optics - Abstract
Continuous-wave output at 229 nm for the application of laser cooling of Cd atoms was generated by the 4th 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 as a fundamental source, we demonstrated magneto-optical trapping of all stable Cd isotopes including isotopes $^{111}$Cd and $^{113}$Cd, which are applicable to optical lattice clocks.
- Published
- 2016
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