Regensburg 2007 – wissenschaftliches Programm
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DY: Fachverband Dynamik und Statistische Physik
DY 27: Quantum chaos III
DY 27.5: Vortrag
Donnerstag, 29. März 2007, 12:15–12:30, H2
Classical phase space revealed by coherent light — •Martina Hentschel1 and Takahisa Harayama2 — 1MPIPKS Dresden, Nöthnitzer Str. 38, 01187 Dresden — 2ATR Wave Engineering Laboratories, 2-2-2 Hikaridai, Kyoto 619-0228, Japan
We study the far field characteristics of oval-resonator laser diodes made of an AlGaAs/GaAs quantum well. The resonator shapes are various oval geometries, thereby probing chaotic, mixed, and integrable classical dynamics. The far field pattern of the lasing cavities shows a pronounced fine structure that strongly depends on the cavity shape. We compare the experimental data with ray-model simulations for a Fresnel billiard and find convincing agreement for all geometries. This allows us to trace back the origin of the far field characteristics fine structure and reveals the importance of the underlying classical phase space for the lasing characteristics.