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- Title
Spectroscopy and laser cooling on the $${}^{1}S_{0}$$ - $$\,^{3}P_{1}$$ line in Yb via an injection-locked diode laser at 1,111.6 nm.
- Authors
Kostylev, N.; Locke, C.; Tobar, M.; McFerran, J.
- Abstract
We generate 555.8-nm light with sub-MHz linewidth through the use of laser injection locking of a semiconductor diode at 1,111.6 nm, followed by frequency doubling in a resonant cavity. The integrity of the injection lock is investigated by studying an offset beat signal between slave and master lasers, by performing spectroscopy on the $$(6s)^{2}\, {}^{1}S_{0}\hbox{--}(6s6p)\,{}^{3}P_{1}$$ transition in magneto-optically trapped ytterbium, and by demonstrating additional laser cooling of $${}^{171}\hbox {Yb}$$ with the 555.8-nm light in a dual-wavelength magneto-optical trap (MOT). For the $${}^{1}S_{0}$$ - $$\,^{3}P_{1}$$ spectroscopy, we confirm the linear dependence between ground-state linewidth and the intensity of an off-resonant laser, namely that used to cool Yb atoms in a $${}^{1}S_{0}$$ - $$\,^{1}P_{1}$$ magneto-optical trap. A temperature of 60 μK is produced for $${}^{171}\hbox {Yb}$$ in the dual-wavelength MOT. Our results demonstrate the suitability of injection-locked 1,100-1,130-nm laser diodes as a source for sub-MHz linewidth radiation in the yellow-green spectrum.
- Subjects
LASER spectroscopy; LASER cooling; INJECTION lasers; SEMICONDUCTOR diodes; SECOND harmonic generation; CAVITY resonators; MAGNETOOPTICS
- Publication
Applied Physics B: Lasers & Optics, 2015, Vol 118, Issue 4, p517
- ISSN
0946-2171
- Publication type
Article
- DOI
10.1007/s00340-015-6018-z