Berlin 2014 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 38: Quantum information: Photons and nonclassical light I

Q 38.7: Vortrag

Donnerstag, 20. März 2014, 12:00–12:15, UDL HS3038

Mode spectrum and emission pattern of whispering gallery mode disk resonators — •Gerhard Schunk, Michael Förtsch, Josef Fürst, Dmitry Strekalov, Florian Sedlmeir, Harald Schwefel, Gerd Leuchs, and Christoph Marquardt — Max Planck Institute for the Science of Light, Institute for Optics, Information and Photonics, University Erlangen-Nuremberg, Erlangen, Germany

The concept of circulating waves in convex-shaped materials enables whispering gallery mode resonators to be both outstanding systems for fundamental research and a promising photonic technology. Here we report on a technique to identify eigenmodes of large whispering gallery disk resonators by extending initial studies of [1,2]. This is equivalent to exactly assigning radial, polar, and azimuthal mode numbers q,l, and m to whispering gallery modes by combining spatial and spectral measurements of the outcoupled modes. The fit also reproduces the experimental changes of the frequency differences of WGMs under a change of the resonator temperature by 25^∘C, which demonstrates one way for tailoring the eigenspectrum of whispering gallery mode resonators.

[1] M. L. Gorodetsky et al., Opt. Commun. Vol. 113, Issue 1-3, pp. 133-143 (1994)

[2] S. Schiller et al., Opt. Lett. Vol. 16, Issue 15, pp. 1138-1140 (1991)