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Published October 11, 2004 | public
Journal Article Open

Loss characterization in microcavities using the thermal bistability effect


We demonstrate a powerful method based on the thermal bistability effect to characterize distinct loss mechanisms limiting the quality factor of microresonators. The relative importance of absorption and scattering losses are investigated in toroidal microcavities using this technique. Empirical results on thermal nonlinearity of these structures have been used to study the interaction of microtoroids with their ambient environment.

Additional Information

Copyright © 2004 American Institute of Physics. Received 26 April 2004; accepted 12 August 2004. This work was supported by DARPA, the Caltech Lee Center, and the National Science Foundation.


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