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DY: Fachverband Dynamik und Statistische Physik

DY 32: Posters DY - Statistical Physics, Brownian Motion and Nonlinear Dynamics

DY 32.7: Poster

Tuesday, March 23, 2021, 16:30–19:00, DYp

Near and far field of coupled microresonators — •Julia Unterhinninghofen and Lasse Roßkamp — Hochschule Koblenz, Konradd-Zuse-Str. 1, 56075 Koblenz

Wavelength-scale microresonators have various applications as sensors, in nonlinear optics, as filters and micro-laser cavities. Multiple interference effects can be seen in microresonator ensembles, both concerning the far (change in far field emission directions, directional emission [1]) and the near field (formation of new cavity modes [2,3]). We compare microresonator arrays of different geometries and their far field emission properties both in a wave and a ray model as well as the near field of strongly coupled ensembles. The effects of surface roughness on the near and far fields is also investigated.

[1] J. Kreismann et al., Superdirectional light emission and emission reversal from microcavity arrays, Phys. Rev. Research 1 (2019) [2] J. Unterhinninghofen et al., Interplay of Goos-Hänchen shift and boundary curvature in deformed microdisks, Phys. Rev. E 82 (2010) [3] J.-W. Ryu et al., Abnormal high-Q modes of coupled stadium-shaped microcavities, Opt. Lett. 39 (2014)