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Published October 31, 2005 | public
Journal Article Open

Controlled transition between parametric and Raman oscillations in ultrahigh-Q silica toroidal microcavities


A controllable and reversible transition between parametric and Raman oscillations in an ultrahigh-Q silica toroidal microcavity is experimentally demonstrated and theoretically analyzed. By direct change of cavity loading and indirect adjustment of frequency detuning, parametric and/or Raman oscillation can be accessed selectively without modification of cavity geometry in a toroidal microcavity with a large enough aspect ratio. Based on an effective cavity gain theory, this transition is analyzed in terms of cavity loading and frequency detuning leading to a better understanding of the combined effects of parametric and Raman processes in silica microcavities.

Additional Information

©2005 American Institute of Physics (Received 28 April 2005; accepted 6 September 2005; published online 28 October 2005) This work was supported by the DARPA, NSF, and the Caltech Lee Center for Advanced Networking.


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