Electrodynamic resonance and ultimate pump intensities for microsphere and microdisk resonators

Vitali E. Gruzdev; Mikhail N. Libenson

doi:10.1117/12.335841

6 January 1999 Electrodynamic resonance and ultimate pump intensities for microsphere and microdisk resonators

Vitali E. Gruzdev, Mikhail N. Libenson

Proceedings Volume 3685, Laser Optics '98: Fundamental Problems of Laser Optics; (1999) https://doi.org/10.1117/12.335841
Event: Laser Optics '98, 1998, St. Petersburg, Russian Federation

Abstract

The problem of initiating of laser-induced damage of ideal microspherical and microdisk resonators and nature of processes limiting ultimate pump intensity of the resonators are considered in this paper. Electrodynamic processes are supposed to play major role in initiating of laser-induced damage of the resonators and theoretical model to describe local increasing of high-power electromagnetic field in passive microresonator is presented to study the processes. It is based on idea of formation of unstable field structure in resonant dielectric microcavity connected with formation of positive feedbacks resulting in light-induced variation of quality factor and its spectrum. Possibility for field instability to arise is estimated making use of model of diffraction of high-power plane wave on sphere and microdisk resulting in formation of resonant whispering-gallery mode. Field instability is shown to be threshold-like phenomenon. There are estimated ultimate amplitude of incident pump wave and field amplification in the microsphere and microdisk.

Citation Download Citation

Vitali E. Gruzdev and Mikhail N. Libenson "Electrodynamic resonance and ultimate pump intensities for microsphere and microdisk resonators", Proc. SPIE 3685, Laser Optics '98: Fundamental Problems of Laser Optics, (6 January 1999); https://doi.org/10.1117/12.335841

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