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  4. Thermally tunable quantum cascade laser with an external germanium-on-SOI distributed bragg reflector
 
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2019
Journal Article
Title

Thermally tunable quantum cascade laser with an external germanium-on-SOI distributed bragg reflector

Abstract
Quantum cascade lasers (QCLs) are essential components for mid-infrared optical spectroscopy. Currently, widely tunable QCLs are using an external diffraction grating to tune the laser wavelength. In this paper we present a compact tunable QCL that is thermally tuned by a distributed Bragg reflector (DBR) implemented on a Germanium-on-SOI (Ge-on-SOI) waveguide circuit. The 5.1x mm wavelength laser, operating in pulsed mode at room temperature, is continuously tuned over 50 nm.
Author(s)
Radosavljevic, Sanja
Ghent University
Radosavljevic, Ana
Ghent University
Schilling, Christian  
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Hugger, Stefan  
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Ostendorf, Ralf  
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Kuyken, Bart
Ghent University
Roelkens, Gunther
Ghent University
Journal
IEEE Journal of Selected Topics in Quantum Electronics  
Open Access
DOI
10.1109/JSTQE.2019.2933784
Language
English
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Keyword(s)
  • quantum cascade laser

  • distributed Bragg reflector

  • Germanium-on-SOI

  • mid-infrared

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