Injection Locking of a Trapped-Ion Phonon Laser
We report on injection locking of optically excited mechanical oscillations of a single, trapped ion. The injection locking dynamics are studied by analyzing the oscillator spectrum with a spatially selective Fourier transform technique and the oscillator phase with stroboscopic imaging. In both cases we find excellent agreement with theory inside and outside the locking range. We attain injection locking with forces as low as 5(1)×10^(-24) N so this system appears promising for the detection of ultraweak oscillating forces.
Additional Information© 2010 The American Physical Society. Received 17 February 2010; published 2 July 2010. We gratefully acknowledge T. Wilken for the frequency comb and M. Hori for helpful discussions. This research was supported by the DFG cluster of excellence ''Munich Center for Advanced Photonics.'' K.V. gratefully acknowledges support from the Alexander von Humboldt foundation and also thanks Caltech. T.W. H. acknowledges support by the Max-Planck Foundation.
Published - Knuenz2010p10792Phys_Rev_Lett.pdf