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Applied Physics Letters / Volume 93 / Issue 17 / STRUCTURAL, MECHANICAL, THERMODYNAMIC, AND OPTICAL PROPERTIES OF CONDENSED MATTER

Appl. Phys. Lett. 93, 171910 (2008); http://dx.doi.org/10.1063/1.3009557 (3 pages)

Columnar quantum dashes for an active region in polarization independent semiconductor optical amplifiers at 1.55 μm

P. Podemski1, G. Sęk1, K. Ryczko1, J. Misiewicz1, S. Hein2, S. Höfling2, A. Forchel2, and G. Patriarche3

1Institute of Physics, Wroclaw University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
2Technische Physik, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
3Laboratoire de Photonique et de Nanostrucures, Centre National de la Recherche Scientifique, Route de Nozay, F-91460 Marcoussis, France

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(Received 26 July 2008; accepted 3 October 2008; published online 30 October 2008)

Here comes a report on the optical properties of InP based InAs columnar quantum dashes, which are proposed as an alternative for columnar quantum dots in semiconductor optical amplifiers construction since they offer convenient spectral tuning over 1.55 μm together with a very broad and high gain. Electronic structure details are investigated by photoreflectance and photoluminescence and analyzed by comparison with effective mass calculations. Columnar quantum dash emission from the cleaved edge is examined by polarization resolved photoluminescence showing a transition of the dominant polarization from transverse electric to transverse magnetic with an increase in the quantum dash vertical dimension.

© 2008 American Institute of Physics

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KEYWORDS and PACS

Keywords

band structure, III-V semiconductors, indium compounds, photoluminescence, photoreflectance, polarisation, semiconductor optical amplifiers, semiconductor quantum dots

PACS

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3009557

PUBLICATION DATA

ISSN

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

Publisher

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

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