期刊
OPTICS EXPRESS
卷 20, 期 27, 页码 29076-29089出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.20.029076
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- Franco-German PROCOPE (Egide/DAAD)
- Bavarian-French BFHZ-CCUFB exchange programs
- German Excellence Initiative via the Nanosystems Initiative Munich (NIM)
We report time domain observations of optical instability in high Q silicon nitride whispering gallery disk resonators. At low laser power the transmitted optical power through the disk looks chaotic. At higher power, the optical output settles into a stable self-pulsing regime with periodicity ranging from hundreds of milliseconds to hundreds of seconds. This phenomenon is explained by the interplay between a fast thermo-optic nonlinearity within the disk and a slow thermo-mechanic nonlinearity of the structure. A model for this interplay is developed which provides good agreement with experimental data and points out routes to control this instability. (C) 2012 Optical Society of America
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