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Proceedings Paper

Rate equation analysis of frequency chirp in optically injection-locked quantum cascade lasers
Author(s): C. Wang; F. Grillot; V. I. Kovanis; J. D. Bodyfelt; J. Even
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Paper Abstract

The frequency chirp characteristics of an optically injection-locked quantum cascade laser are theoretically investigated. The key parameter chirp-to-power ratio (CPR) is analytically derived from a full rate equation model. The CPR value can be efficiently reduced by increasing optical injection strength, especially at modulation frequencies less than 10 GHz. In contrast to interband lasers, both positive and negative frequency detuning increase the CPR. Since the frequency detuning is also predicted to enhance the intensity modulation response, a trade-off is required in the optical injection to simultaneously obtain a large modulation bandwidth and low frequency chirp.

Paper Details

Date Published: 7 March 2014
PDF: 8 pages
Proc. SPIE 8980, Physics and Simulation of Optoelectronic Devices XXII, 898014 (7 March 2014); doi: 10.1117/12.2037745
Show Author Affiliations
C. Wang, LTCI, CNRS, Telecom Paristech, Ecole Nationale Supérieure des Télécommunications (France)
CNRS FOTON, INSA, Univ. Européenne de Bretagne (France)
F. Grillot, LTCI, CNRS, Telecom Paristech, Ecole Nationale Supérieure des Télécommunications (France)
V. I. Kovanis, The Ohio State Univ. (United States)
Air Force Research Lab. (United States)
J. D. Bodyfelt, Massey Univ. Albany (New Zealand)
J. Even, INSA, CNRS FOTON, Univ. Européenne de Bretagne (France)


Published in SPIE Proceedings Vol. 8980:
Physics and Simulation of Optoelectronic Devices XXII
Bernd Witzigmann; Marek Osiński; Fritz Henneberger; Yasuhiko Arakawa, Editor(s)

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