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Proceedings Paper

Recurrent state-switching of a two-state quantum dot laser by optical feedback
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Paper Abstract

In this contribution, we experimentally report recurrent switching between ground and excited state emission in a quantum dot laser controlled by optical feedback. We demonstrate that changing the phase of the optical feedback can efficiently induce switching between the two emission processes of the laser. Experimentally, by using an external mirror placed on a piezo-actuator, we were able to achieve incomplete switching between ground and excited state emission, i.e. without complete extinction of the modes. The switching takes place for variations of the external cavity length at the wavelength scale, i.e. around 1.2 um. Theoretically, we successfully link this switching behaviour with the evolution of the modal gain difference between the two modes induced by the variations of the optical feedback phase.

Paper Details

Date Published: 28 April 2016
PDF: 6 pages
Proc. SPIE 9892, Semiconductor Lasers and Laser Dynamics VII, 98921O (28 April 2016); doi: 10.1117/12.2227085
Show Author Affiliations
Martin Virte, Vrije Univ. Brussel (Belgium)
Stefan Breuer, Technische Univ. Darmstadt (Germany)
Marc Sciamanna, Lab. Matèriaux Optiques, Photoniques et Systèmes, CentraleSupélec, Univ. de Lorraine (France)
Krassimir Panajotov, Vrije Univ. Brussel (Belgium)
Institute of Solid State Physics (Bulgaria)

Published in SPIE Proceedings Vol. 9892:
Semiconductor Lasers and Laser Dynamics VII
Krassimir Panajotov; Marc Sciamanna; Angel Valle; Rainer Michalzik, Editor(s)

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