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Proceedings Paper

Mid-Infrared (~2.8 μm to ~7.1 μm) interband cascade lasers
Author(s): Sven Höfling; Robert Weih; Matthias Dallner; Julian Scheuermann; Michael von Edlinger; Lars Nähle; Marc Fischer; Johannes Koeth; Martin Kamp
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Paper Abstract

20 years after their first reference interband cascade lasers (ICLs) have become a mature and competitive semiconductor laser source in the mid-infrared region. The carrier rebalancing concept that was introduced in 2011 drastically improved the performance. As a consequence the wavelength window that is accessible for ICLs operating at ambient temperatures could be extended. For GaSb based ICLs continuous wave (cw) emission at room temperature could be achieved up to a wavelength of 5.6 μm. As the need for thicker claddings at longer wavelengths makes the growth of the superlattice claddings increasingly difficult and limits the heat dissipation, a plasmon waveguide structure with highly doped InAslayers grown on InAs-substrates is typically used for ICLs emitting up to ~7 μm in pulsed mode at room temperature. With regard to the short wavelength limit of ICLs, we present cw emission of a GaSb based ICL emitting at 2.8 μm and with regard to the long wavelength limit we present room temperature pulsed operation of an InAs based plasmonic waveguide ICL up to 7.1 μm. Furthermore, we show single mode emitting ICLs with distributed feedback gratings emitting between 2.8 and 5.2 μm.

Paper Details

Date Published: 21 August 2015
PDF: 7 pages
Proc. SPIE 9550, Biosensing and Nanomedicine VIII, 95500F (21 August 2015); doi: 10.1117/12.2193657
Show Author Affiliations
Sven Höfling, Julius-Maximilians-Univ. Würzburg (Germany)
Univ. of St. Andrews (United Kingdom)
Robert Weih, Julius-Maximilians-Univ. Würzburg (Germany)
Matthias Dallner, Julius-Maximilians-Univ. Würzburg (Germany)
Julian Scheuermann, nanoplus GmbH (Germany)
Michael von Edlinger, nanoplus GmbH (Germany)
Lars Nähle, nanoplus GmbH (Germany)
Marc Fischer, nanoplus GmbH (Germany)
Johannes Koeth, nanoplus GmbH (Germany)
Martin Kamp, Julius-Maximilians-Univ. Würzburg (Germany)

Published in SPIE Proceedings Vol. 9550:
Biosensing and Nanomedicine VIII
Hooman Mohseni; Massoud H. Agahi; Manijeh Razeghi, Editor(s)

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