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arXiv · 1010.5664

A Single Laser System for Ground-State Cooling of 25-Mg+

Boerge Hemmerling·Florian Gebert·Yong Wan·Daniel Nigg·Ivan V. Sherstov·Piet O. Schmidt
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Abstract

We present a single solid-state laser system to cool, coherently manipulate and detect $^{25}$Mg$^+$ ions. Coherent manipulation is accomplished by coupling two hyperfine ground state levels using a pair of far-detuned Raman laser beams. Resonant light for Doppler cooling and detection is derived from the same laser source by means of an electro-optic modulator, generating a sideband which is resonant with the atomic transition. We demonstrate ground-state cooling of one of the vibrational modes of the ion in the trap using resolved-sideband cooling. The cooling performance is studied and discussed by observing the temporal evolution of Raman-stimulated sideband transitions. The setup is a major simplification over existing state-of-the-art systems, typically involving up to three separate laser sources.

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Boerge Hemmerling, Florian Gebert, Yong Wan, Daniel Nigg, Ivan V. Sherstov, Piet O. Schmidt. 2011-02-22. A Single Laser System for Ground-State Cooling of 25-Mg+. https://doi.org/10.1007/s00340-011-4444-0

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