Frequency stabilization of an ultraviolet laser to ions in a discharge

Details Frequency stabilization of an ultraviolet laser to ions in a discharge Frequency stabilization of an ultraviolet laser to ions in a discharge

2008-06-11

arxiv.org/abs/0806.1794v1

Applied Physics Letters 93 071103 (2008)

Physics

Optics

4 pages, 3 figures. Submitted to Applied Physics Letters

Scientific paper

10.1063/1.2973401

We stabilize an ultraviolet diode laser system at 369.5 nm to the optical absorption signal from Yb+ ions in a hollow-cathode discharge lamp. The error signal for stabilization is obtained by Zeeman spectroscopy of the 3 GHz-wide absorption feature. The frequency stability is independently measured by comparison against the fluorescence signal from a laser-cooled crystal of 174Yb+ ions in a linear Paul trap. We measure a frequency fluctuation of 1.7 MHz RMS over 1000 s, and a frequency drift of 20 MHz over 7 days. Our method is suitable for use in quantum information processing experiments with trapped ion crystals.

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