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Proceedings Paper

Intensity modulation response of injection-locked quantum cascade lasers
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Paper Abstract

The intensity modulation (IM) property of an optical injection-locked quantum cascade (QC) laser is theoretically investigated via a three-level rate equation model. The locking regime is obtained based on the local bifurcation theory. It is shown that the injection-locked QC laser exhibits a rather flat modulation response at zero detuning, whose bandwidth increases with the injection level. In contrast to interband lasers, both positive and negative detunings enhance the modulation bandwidth. Besides, a large linewidth enhancement factor (LEF) can increase the peak amplitude in the response. Moreover, it is found that no frequency dip occurs in the IM response of injection-locked QC lasers.

Paper Details

Date Published: 14 March 2013
PDF: 9 pages
Proc. SPIE 8619, Physics and Simulation of Optoelectronic Devices XXI, 86191Q (14 March 2013); doi: 10.1117/12.2002007
Show Author Affiliations
Cheng Wang, Institut National des Sciences Appliquées de Rennes, CNRS (France)
Frédéric Grillot, Telecom ParisTech, CNRS (France)
Jacky Even, Institut National des Sciences Appliquées de Rennes, CNRS (France)

Published in SPIE Proceedings Vol. 8619:
Physics and Simulation of Optoelectronic Devices XXI
Bernd Witzigmann; Marek Osinski; Fritz Henneberger; Yasuhiko Arakawa, Editor(s)

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