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An ion-trap phonon laser

Vahala, K. and Herrmann, M. and Knünz, S. and Batteiger, V. and Saathoff, G. and Hänsch, T. W. and Udem, Th. (2009) An ion-trap phonon laser. In: CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference. IEEE , Piscataway, NJ. ISBN 978-1-4244-4079-5.

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Cooling of atoms and ions using a red-detuned laser has had a profound impact on science and technology. In this work simultaneous laser cooling and blue-detuned laser pumping of a Mg+ ion in a Paul trap is studied. Blue-detuned pumping is conventionally referred to as the heating regime, and in early work, remarkably complex behaviors (bistability and limit cycles) have been associated with this regime. These behaviors have so far not been fully explained. Here, it is shown that blue-detuned pumping, as opposed to heating, causes stimulated emission of center-of-mass phonons, leading to coherent oscillatory motion of the ion in analogy with a laser. Mechanical amplification is calculated as well as the threshold pumping condition for oscillation. A single ion in a linear radio-frequency trap is studied to verify these predictions. Blue-detuned pumping of the magnesium D2 transition at 279.6 nm provides amplification along the long axis of the ion trap so as to excite only axial oscillations. A slightly off-axis, red-detuned beam cools the center-of-mass motion to approximately 1 mK.

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Vahala, K.0000-0003-1783-1380
Additional Information:© 2009 IEEE.
Record Number:CaltechAUTHORS:20170327-161113792
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Official Citation:K. Vahala et al., "An ion-trap phonon laser," CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference, Munich, 2009, pp. 1-1. doi: 10.1109/CLEOE-EQEC.2009.5192335
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:75449
Deposited By: Kristin Buxton
Deposited On:27 Mar 2017 23:25
Last Modified:03 Oct 2019 16:50

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