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Title: Microcavity design for low threshold polariton condensation with ultrashort optical pulse excitation

Abstract

We present a microcavity structure with a shifted photonic stop-band to enable efficient non-resonant injection of a polariton condensate with spectrally broad femtosecond pulses. The concept is demonstrated theoretically and confirmed experimentally for a planar GaAs/AlGaAs multilayer heterostructure pumped with ultrashort near-infrared pulses while photoluminescence is collected to monitor the optically injected polariton density. As the excitation wavelength is scanned, a regime of polariton condensation can be reached in our structure at a consistently lower fluence threshold than in a state-of-the-art conventional microcavity. Our microcavity design improves the polariton injection efficiency by a factor of 4, as compared to a conventional microcavity design, when broad excitation pulses are centered at a wavelength of λ = 740 nm. Most remarkably, this improvement factor reaches 270 when the excitation wavelength is centered at 750 nm.

Authors:
; ;  [1]; ; ; ;  [2];  [1];  [3]
  1. Department of Physics, University of Regensburg, 93040 Regensburg (Germany)
  2. CNRS-Laboratoire de Photonique et Nanostructures, Route de Nozay, 91460 Marcoussis (France)
  3. (Germany)
Publication Date:
OSTI Identifier:
22410263
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 117; Journal Issue: 20; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALUMINIUM ARSENIDES; COMPARATIVE EVALUATIONS; EFFICIENCY; EXCITATION; GALLIUM ARSENIDES; HETEROJUNCTIONS; LAYERS; PHOTOLUMINESCENCE; POLARONS; PULSED IRRADIATION; VISIBLE RADIATION; WAVELENGTHS

Citation Formats

Poellmann, C., Leierseder, U., Huber, R., Galopin, E., Lemaître, A., Amo, A., Bloch, J., Ménard, J.-M., E-mail: jean-michel.menard@mpl.mpg.de, and Max Planck Institute for the Science of Light, Günther-Scharowsky-Straße 1, 91058 Erlangen. Microcavity design for low threshold polariton condensation with ultrashort optical pulse excitation. United States: N. p., 2015. Web. doi:10.1063/1.4921586.
Poellmann, C., Leierseder, U., Huber, R., Galopin, E., Lemaître, A., Amo, A., Bloch, J., Ménard, J.-M., E-mail: jean-michel.menard@mpl.mpg.de, & Max Planck Institute for the Science of Light, Günther-Scharowsky-Straße 1, 91058 Erlangen. Microcavity design for low threshold polariton condensation with ultrashort optical pulse excitation. United States. doi:10.1063/1.4921586.
Poellmann, C., Leierseder, U., Huber, R., Galopin, E., Lemaître, A., Amo, A., Bloch, J., Ménard, J.-M., E-mail: jean-michel.menard@mpl.mpg.de, and Max Planck Institute for the Science of Light, Günther-Scharowsky-Straße 1, 91058 Erlangen. Thu . "Microcavity design for low threshold polariton condensation with ultrashort optical pulse excitation". United States. doi:10.1063/1.4921586.
@article{osti_22410263,
title = {Microcavity design for low threshold polariton condensation with ultrashort optical pulse excitation},
author = {Poellmann, C. and Leierseder, U. and Huber, R. and Galopin, E. and Lemaître, A. and Amo, A. and Bloch, J. and Ménard, J.-M., E-mail: jean-michel.menard@mpl.mpg.de and Max Planck Institute for the Science of Light, Günther-Scharowsky-Straße 1, 91058 Erlangen},
abstractNote = {We present a microcavity structure with a shifted photonic stop-band to enable efficient non-resonant injection of a polariton condensate with spectrally broad femtosecond pulses. The concept is demonstrated theoretically and confirmed experimentally for a planar GaAs/AlGaAs multilayer heterostructure pumped with ultrashort near-infrared pulses while photoluminescence is collected to monitor the optically injected polariton density. As the excitation wavelength is scanned, a regime of polariton condensation can be reached in our structure at a consistently lower fluence threshold than in a state-of-the-art conventional microcavity. Our microcavity design improves the polariton injection efficiency by a factor of 4, as compared to a conventional microcavity design, when broad excitation pulses are centered at a wavelength of λ = 740 nm. Most remarkably, this improvement factor reaches 270 when the excitation wavelength is centered at 750 nm.},
doi = {10.1063/1.4921586},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 20,
volume = 117,
place = {United States},
year = {2015},
month = {5}
}