Abstract
We present a single solid-state laser system to cool, coherently manipulate and detect 25Mg+ 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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Hemmerling, B., Gebert, F., Wan, Y. et al. A single laser system for ground-state cooling of 25Mg+ . Appl. Phys. B 104, 583–590 (2011). https://doi.org/10.1007/s00340-011-4444-0
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DOI: https://doi.org/10.1007/s00340-011-4444-0