Linearly Polarized, Single-Mode Spontaneous Emission in a Photonic Nanowire

Mathieu Munsch, Julien Claudon, Joël Bleuse, Nitin S. Malik, Emmanuel Dupuy, Jean-Michel Gerard, Yuntian Chen, Niels Gregersen, Jesper Mørk

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We introduce dielectric elliptical photonic nanowires to funnel efficiently the spontaneous emission of an embedded emitter into a single optical mode. Inside a wire with a moderate lateral aspect ratio, the electromagnetic environment is largely dominated by a single guided mode, with a linear polarization oriented along the ellipse major axis. The resulting monomode spontaneous emission is maintained over a broad wavelength range, a key asset of this 1D photonic structure. Our theoretical analysis is completed by an experimental study of GaAs elliptical photonic wires with embedded InAs quantum dots. In particular, the fraction of collected photons with the desired linear polarization can exceed 95%.
Original languageEnglish
JournalPhysical Review Letters
Issue number7
Pages (from-to)077405
Publication statusPublished - 2012

Bibliographical note

Copyright (2012) American Physical Society.


  • Physics
  • Quantum dots
  • Laser


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