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Applied Physics Letters / Volume 100 / Issue 6 / PHOTONICS AND OPTOELECTRONICS

Appl. Phys. Lett. 100, 061122 (2012); http://dx.doi.org/10.1063/1.3683541 (4 pages)

Enhanced spontaneous emission from quantum dots in short photonic crystal waveguides

Thang Ba Hoang1, Johannes Beetz2, Leonardo Midolo1, Matthias Skacel1, Matthias Lermer2, Martin Kamp2, Sven Höfling2, Laurent Balet1,3, Nicolas Chauvin1, and Andrea Fiore1

1COBRA Research Institute, Eindhoven University of Technology, P.O. Box 513, NL-5600MB Eindhoven, The Netherlands
2Technische Physik and Wilhelm Conrad Röntgen Research Center for Complex Material Systems, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
3Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland

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(Received 1 December 2011; accepted 21 January 2012; published online 10 February 2012)

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.

© 2012 American Institute of Physics

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KEYWORDS, PACS, and IPC

Keywords

Fabry-Perot resonators, finite element analysis, optical waveguides, photoluminescence, photonic crystals, quantum dots, slow light, spontaneous emission

PACS

  • 42.79.Gn

    Optical waveguides and couplers

  • 42.70.Qs

    Photonic bandgap materials

  • 68.65.Hb

    Quantum dots (patterned in quantum wells)

  • 78.55.-m

    Photoluminescence, properties and materials

  • 02.70.Dh

    Finite-element and Galerkin methods

International Patent Classification (IPC)

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3683541

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
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