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Advanced Optical Technologies

Editor-in-Chief: Pfeffer, Michael

CiteScore 2018: 1.42

SCImago Journal Rank (SJR) 2018: 0.499
Source Normalized Impact per Paper (SNIP) 2018: 1.346

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Volume 2, Issue 5-6


Beam combining of quantum cascade lasers for remote sensing

Hans Dieter Tholl / Joachim Wagner
  • Fraunhofer Institute for Applied Solid State Physics, Tullastrasse 72, D-79108 Freiburg, Germany
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
Published Online: 2013-11-13 | DOI: https://doi.org/10.1515/aot-2013-0053


This letter highlights the application of quantum cascade lasers for stand-off detection and remote sensing. In particular, we review the topic of power scaling via beam combining architectures and conclude with remarks on generating axial symmetric irradiance profiles via incoherent aperture beam combining of individual quantum cascade lasers.

Keywords: beam combining; optical sensing; quantum cascade lasers; remote sensing; sensors; stand-off detection; OCIS codes: 120.0280; 140.3298; 140.5965; 260.3060; 280.4788


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About the article

Hans Dieter Tholl

Hans Dieter Tholl received a Diploma in physics in 1985 and a PhD in Optical Physics in 1990, both from the Technical University (RWTH) of Aachen. He was awarded the Borchers Medal of the RWTH for his outstanding PhD Thesis. In the years 1990/1991 he was assistant research professor at the University of Nevada. From 1991 to 1995 he served as a coordinator for projects in optical metrology at the Technical University of Aachen. He joined Diehl in 1995 and became head of the Optronics and Laser Techniques section in 1998. At Diehl, H.D. Tholl serves as chief engineer and manager in national and European projects related to active and passive optronics. In addition to his industry position, H.D. Tholl lectures in Wave Optics, Laser Theory, and Laser Applications at the Technical University of Ravensburg-Weingarten in Germany.

Joachim Wagner

Joachim Wagner received a Ph.D. degree in physics from the University of Stuttgart, Stuttgart, Germany, in 1982. From 1982 to 1984 he worked at the “Max-Planck-Institut für Festkörperforschung”, Stuttgart, Germany, in the group of Prof. M. Cardona before joining the Fraunhofer-Institute for Applied Solid State Physics, Freiburg, Germany, in 1985. There he is currently deputy director and head of the Department “Optoelectronic Modules”. He is also Professor at the Institute of Physics of the University of Freiburg and an associated member of the Materials Research Center Freiburg (FMF). His current research interests include III/V-semiconductor heterostructures and their application in optoelectronic devices both for the infrared and the visible/uv spectral range. He is author or coauthor of more than 400 scientific publications including several review papers and book chapters.

Corresponding author: Hans Dieter Tholl, Diehl BGT Defence, Alte Nussdorfer Strasse 13, D-88662 Ueberlingen, Germany, e-mail:

Received: 2013-09-10

Accepted: 2013-10-15

Published Online: 2013-11-13

Published in Print: 2013-12-01

Citation Information: Advanced Optical Technologies, Volume 2, Issue 5-6, Pages 439–444, ISSN (Online) 2192-8584, ISSN (Print) 2192-8576, DOI: https://doi.org/10.1515/aot-2013-0053.

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