Hamburg 2009 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 14: Ultra-Cold Atoms, Ions and BEC I (with Q)
A 14.3: Vortrag
Dienstag, 3. März 2009, 17:30–17:45, VMP 6 HS-C
A Trapped-Ion Phonon Laser — •S Knünz1, V Batteiger1, M Herrmann1, T Udem1, T W Hänsch1, and K Vahala2 — 1MPQ, Hans Kopfermann-Strasse, 85748 Garching — 2California Institute of Technology, Pasadena, CA 91125
Red-detuned laser pumping is a well known and powerful cooling technique. The opposite regime of blue-detuned pumping widely known as heating is investigated in this talk. A theoretical framework as well as experimental results on a single, laser-cooled Magnesium ion are presented. We show that this regime is stimulated emission of center-of-mass phonons instead, which can lead to coherent vibrational motion in analogy to a laser.