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Proceedings Paper

Surface acoustic wave frequency comb
Author(s): A. B. Matsko; A. A. Savchenkov; V. S. Ilchenko; D. Seidel; L. Maleki
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Paper Abstract

We investigate opto-mechanical oscillation (OMO) and subsequent generation of acoustic wave frequency combs in monolithic crystalline whispering gallery mode (WGM) resonators. The OMO is observed in resonators made of electro-optic (lithium tantalate), non-electro-optic birefringent (magnesium fluoride), and non-birefringent (calcium fluoride) materials. The phenomenon manifests itself as generation of optical harmonics separated by the eigenfrequency of a surface acoustic wave (SAW) mechanical mode of the same WGM resonator. We show that the light escaping the resonator and demodulated on a fast photodiode produces a spectrally pure radio frequency (RF) signal. For instance, we demonstrate generation of 200 MHz signals with instantaneous linewidth of 0.2 Hz.

Paper Details

Date Published: 6 February 2012
PDF: 10 pages
Proc. SPIE 8236, Laser Resonators, Microresonators, and Beam Control XIV, 82361M (6 February 2012); doi: 10.1117/12.906815
Show Author Affiliations
A. B. Matsko, OEwaves, Inc. (United States)
A. A. Savchenkov, OEwaves, Inc. (United States)
V. S. Ilchenko, OEwaves, Inc. (United States)
D. Seidel, OEwaves, Inc. (United States)
L. Maleki, OEwaves, Inc. (United States)

Published in SPIE Proceedings Vol. 8236:
Laser Resonators, Microresonators, and Beam Control XIV
Alexis V. Kudryashov; Alan H. Paxton; Vladimir S. Ilchenko, Editor(s)

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