Polarization control in a vertical cavity surface emitting laser submitted to optical feedback |
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Authors: | Frank Robert Pascal Besnard Marie-Laure CharéS Guy Stephan |
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Affiliation: | 1. Laboratoire d’Optronique associé au Centre National de la Recherche Scientifique (UPRESA 6082) Université de Rennes I, ENSSAT, 6, rue de Kérampont, F-22305, Lannion Cedex
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Abstract: | We study experimentally and theoretically two polarization effects in a vertical cavity surface emitting laser submitted to optical feedback. In a first experiment, we obtain flips between two linearly polarized laser modes up to a frequency of 50 MHz using an external cavity with a polarizer. In a second experiment, polarization self modulation is demonstrated up to a frequency of 2.6 GHz, using a quarter wave plate instead. Numerical calculations, based on a four levels model for the active medium, show a good agreement with the experiments. |
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