Continuous-wave, single-frequency 229 nm laser source for laser cooling of cadmium atoms
Authors:
- Yushi KanedaYKYushi Kaneda
- J. M. YarboroughJYJ. M. Yarborough
- Yevgeny MerzlyakYMYevgeny Merzlyak
- Atsushi YamaguchiAYAtsushi Yamaguchi
- Keitaro HayashidaKHKeitaro Hayashida
- Noriaki OhmaeNONoriaki Ohmae
- Hidetoshi KatoriHKHidetoshi Katori
Preprint
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.Keywords
All Related Versions
- Version 1, 2016-05-12, ArXiv
- Published version: Optics Letters, 41 (4), 705.
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