Regensburg 2004 – wissenschaftliches Programm
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DY: Dynamik und Statistische Physik
DY 46: Poster
DY 46.42: Poster
Donnerstag, 11. März 2004, 16:00–18:00, Poster D
How optical microresonators radiate — •Martina Hentschel1 and Henning Schomerus2 — 1Department of Physics, Duke University, Durham, NC 27708-0305, U.S.A. — 2MPI Physik komplexer Systeme, Noethnitzer Str. 38, D-01187 Dresden
Optical microresonators have broad application potential in optical communication devices, and are interesting model systems in the field of Wave Chaos. Most of our qualitative understanding of their radiation characteristics rests on the simple ray-optics picture, which however requires a wave length much smaller than the geometric features of the system. This is not realized in the most interesting applications. We highlight effects that lead to substantial deviations from the ray picture. Notably, at curved interfaces, the Goos-Haenchen effect causes deviations from both Snell’s and Fresnel’s laws. We analyse the resulting deviations in the radiation characteristics using four appropriately defined Husimi functions, corresponding to incident and emerging rays on either side of the interface. These four phase-space representations of the electromagnetic wave function naturally allow to read-off the radiation directions, and replace the single Husimi function used in hard-wall systems.