Düsseldorf 2007 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 4: Nichtlineare optische Effekte und Lichtquellen I
Q 4.5: Talk
Monday, March 19, 2007, 11:30–11:45, 5J
Nonlinear Resonance Broadening and Shift due to Thermo-Optical Instability in Microsphere Resonators — •Carsten Scmidt1, Arkadi Chipouline1, Thomas Pertsch1, Oleg Egorov2, Falk Lederer2, Andreas Tünnermann3, and Lev Deych4 — 1ZIK Ultra optics, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743, Jena, Germany — 2Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743, Jena, Germany — 3Fraunhofer Institute for Applied Optics and Precision Engineering, Albert-Einstein-Strasse 7, 07745 Jena, Germany — 4Department of Physics of Queens College of the City University of New York, 65-30 Kissena Blvd, Flushing, NY 11367
During last several years, high-Q optical microresonators received significant attention [1]. Thresholds for nonlinear effects could be achieved at signal powers of the order of several milliwatts, which is stipulated by the unprecedented values of Q factors (up to 109) and the small occupied volume of whispering-gallery-modes [2]. In this work, the broadening of the resonance peaks and their shifting have been experimentally observed. The effects are caused by thermo-optical nonlinearity and could be described theoretically using a mean field approach.
[1] D. Braunstein, A. M. Khazanov, G. A. Koganov, and R. Shuker, "Lowering of threshold conditions for nonlinear effects in a microsphere", Phys. Rev. A 53, 3565-3572 (1996).
[2] A. E. Fomin, M. L. Gorodetsky, I. S. Grudinin, and V. S. Ilchenko, "Nonstationary nonlinear effects in optical microspheres", JOSA B 22, 459-465 (2005).