Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
Q: Quantenoptik und Photonik
Q 20: Photonische Kristalle I
Q 20.1: Vortrag
Dienstag, 14. März 2006, 10:40–10:55, HI
Bloch-mode Formation and Disorder in Coupled-Cavity Chains — •Björn M. Möller1, Ulrike Woggon1, and Mikhail V. Artemyev1,2 — 1Department of Physics, University of Dortmund — 2Institute for Physico-Chemical Problems of Belarussian State University
The coupled-microresonator model is an important concept to describe loss-less waveguiding, photonic circuits, and slowing down light [1-3].
In this work, we discuss a coupled oscillator model for photon states in finite 1D-periodic structures. Experimentally, we explore the coherent photon coupling in linear chains of up to 14 spherical microcavities. Coherent coupling is evidenced by (i) collapse of individual whispering gallery modes, (ii) splitting of modes into a fine structure, (iii) the strong variation of the field intensity and splitting features between adjacent spheres in a chain.
We demonstrate how intensity modifications along the coupled resonator chain can originate from two different phenomena: The observed intensity variations are explained using a coupled oscillator model predicting locally varying oscillator strengths. Both Bloch-mode formation and size disorder can lead to significant field variations in a coupled resonator structure. The transition between both effects are transparently explored in terms of this coupled-oscillator model.
[1] A. Yariv et al., Opt. Lett. 24 (11), 711 (1999)
[2] B. M. Möller, et al., Opt. Lett. 30 (16), 2116 (2005)
[3] B. M. Möller, et al., J. Appl. Opt. A, in press (2006)