Regensburg 2004 – wissenschaftliches Programm
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HL: Halbleiterphysik
HL 36: Quantenpunkte und -dr
ähte: Optische Eigenschaften I
HL 36.7: Vortrag
Donnerstag, 11. März 2004, 11:45–12:00, H17
Optical properties of semiconductor microcavity pillars — •J. Wiersig1, N. Baer1, P. Gartner1, F. Jahnke1, M. Benyoucef2, S.M. Ulrich2 und P. Michler2 — 1Universität Bremen — 2Universität Stuttgart
A recent experiment demonstrated the generation of triggered photon pairs due to cascaded biexciton-exciton emission from a single InGaAs/GaAs quantum dot in a cylindrical micropillar [1]. Such experiments are based on the altered spontaneous emission of carriers in the microcavity as well as on the selection of optical transitions by the resonator. Within a detailed theory-experiment comparison we study optical modes and the resulting emission properties in micropillars with decreasing diameter. Calculations of the electromagnetic mode structure are based on two alternative methods: direct solutions of the Lippmann-Schwinger equation for the electromagnetic vector field, and a generalized vectorial transfer matrix approach.
[1] M. Benyoucef, S.M. Ulrich, P. Michler, J. Wiersig, F. Jahnke, A. Forchel, unpublished.