Manipulation of the spontaneous emission dynamics of quantum dots in two-dimensional photonic crystals
By A. Kress, F. Hofbauer, N. Reinelt, M. Kaniber, H. Krenner, R. Meyer, G. Boehm, J. Finley. 2005
140 citations recorded by the source corpus.
We demonstrate the ability to control the spontaneous emission dynamics of self-assembled quantum dots via the local density of optical modes in two-dimensional s2Dd photonic crystals. We show that an incomplete 2D photonic band gap is sufficient to significantly lengthen the spontaneous emission lifetimes.2 3 d over a wide bandwidth sDl o40 nmd. For dots that are both spectrally and spatially coupled to strongly localized fVmodes, 1.5sl / nd 3 g, high Q, 2700 optical modes, we have directly measured a strong Purcell-enhanced shortening of the emission lifetime o5.63, limited only by our temporal resolution. Analysis of the spectral dependence of the recombination dynamics shows a maximum lifetime shortening of 19± 4. From the directly measured enhancement and suppression we show that the single-mode coupling efficiency for quantum dots in such structures is at least b = 92% and is estimated to be as large as ,97%.
Subfields: Atomic and Molecular Physics, and Optics, Biomedical Engineering, Electrical and Electronic Engineering
View Paper: https://www.semanticscholar.org/paper/c4ba3707cdc47a7c4fbc24cb680144de23928783
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Citations in the corpus
- Dynamic modulation of photonic crystal nanocavities using gigahertz acoustic phonons (2011, background): “Taking into account the Purcell enhancement of the radiative decay rate of the quantum dot emissio”
- Semiconductor quantum light sources (2007, background): “High-quality active cavities have also been demonstrated in GaAs containing InAs quantum dot”
- Surface enhanced fluorescence (2008, methodology): “These improvements in light emission/detection have been used in various systems, such as organic molecules [2, 3], semiconductor device structures, micropillars [4], microdiscs [5] and more recently in photonic crystal defect nanocavities [6–8].”