Enhanced spontaneous emission from quantum dots in short photonic crystal waveguides

Thang Ba Hoang*, Johannes Beetz, Leonardo Midolo, Matthias Skacel, Matthias Lermer, Martin Kamp, Sven Höfling, Laurent Balet, Nicolas Chauvin, Andrea Fiore

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

54 Citations (Scopus)


We report a study of the quantum dot (QD) emission in short photonic crystal waveguides. We observe that the quantum dot photoluminescence intensity and decay rate are strongly enhanced when the emission energy is in resonance with Fabry-Perot (FP) cavity modes in the slow-light regime of the dispersion curve. The experimental results are in agreement with previous theoretical predictions and are further supported by three-dimensional finite element simulations. Our results show that the combination of slow group velocity and Fabry-Perot cavity resonance provide an avenue to efficiently channel photons from quantum dots into waveguides for integrated quantum photonic applications. (C) 2012 American Institute of Physics. [doi:10.1063/1.3683541]

Original languageEnglish
Article number061122
Number of pages4
JournalApplied Physics Letters
Issue number6
Publication statusPublished - 6 Feb 2012




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