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Regensburg 2019 – scientific programme

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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur

KFM 4: Focus: Whispering-Gallery-Mode Resonators

Monday, April 1, 2019, 09:30–13:30, H47

Whispering Gallery Mode (WGM) resonators confine and enhance electro - magnetic fields almost entirely within a transparent dielectric. Strong light - matter interactions such as optical nonlinearities are the consequence. Therefore, these resonators are a link between the two continuously merging worlds of photonics and solid state physics. Research and applications using this type of resonators rely heavily on the availability of high quality linear and nonli near materials. Furthermore, advanced material processing for the fabrication of high quality resonators, in particular for on - chip integration is required. On the other hand, the strong light - matter interaction allows to study linear and nonlinear dielec tric material properties with high sensitivity over a huge wavelength regime from visible over infrared down to terahertz and microwave frequencies. WGM resonators can also serve as a widely tunable source of classical as well as quantum light which can be used for different types of high precision spectroscopy. The aim of this session is to cover the topics of this field and bring together the communities of photonics and solid state physics.

Chair: Florian Sedlmeir (Max Planck Institute for the Science of Light)

09:30 KFM 4.1 Invited Talk: Mixing microwave and light: up-conversion and frequency combs — •Harald G. L. Schwefel
10:00 KFM 4.2 Frequency comb up- and down-conversion in synchronously driven χ(2) optical microresonators — •Jan Szabados, Simon Johannes Herr, Victor Brasch, Ewelina Obrzud, Yuechen Jia, Steve Lecomte, Karsten Buse, Ingo Breunig, and Tobias Herr
10:20 KFM 4.3 Electro-optic tuning of whispering gallery resonators made of KTN crystals — •Ingo Breunig, Jan Szabados, and Karsten Buse
10:40 KFM 4.4 Adiabatic frequency conversion in high-Q lithium niobate whispering gallery resonators — •Yannick Minet, Luís Reis, Ingo Breunig, and Karsten Buse
11:00 KFM 4.5 Dielectric tuning of millimeter-wave whispering-gallery modes for electro-optic phase matching — •Gabriel Santamaria Botello, Kerlos Atia Abdalmalak, Daniel Segovia Vargas, Luis Enrique Garcia Muñoz, and Zoya Popovic
  11:20 Break 20 min
11:40 KFM 4.6 Invited Talk: Nonlinear whispering gallery resonators for quantum optical technologies — •Christoph Marquardt
12:10 KFM 4.7 Non-classical light from a nonlinear crystalline whispering gallery mode resonator — •Alexander Otterpohl, Florian Sedlmeir, Thomas Dirmeier, Ulrich Vogl, Gerhard Schunk, Golnoush Shafiee, Dmitry Strekalov, Harald G. L. Schwefel, Tobias Gehring, Ulrik L. Andersen, Gerd Leuchs, and Christoph Marquardt
12:30 KFM 4.8 Single photon generation in a whispering gallery mode resonator — •Golnoush Shafiee, Florian Sedlmeir, Gerhard Schunk, Alexander Otterpohl, Ulrich Vogl, Dmitry Strekalov, Harald G. L. Schwefel, Gerd Leuchs, and Christoph Marquardt
12:50 KFM 4.9 The optical Möbius strip cavity: Tailoring geometric phases and far fields — •Jakob Kreismann and Martina Hentschel
13:10 KFM 4.10 Super-directional light emission from arrays of deformed microcavities — •Jakob Kreismann, Martina Hentschel, Arne Behrens, and Stefan Sinzinger
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