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Proceedings Paper

Modal conversion of a phase-locked extended-cavity diode laser array into a single lobe
Author(s): David Pabœuf; Florian Emaury; Sébastien de Rossi; Arnaud Jérome; Michel Lamare; Raymond Mercier; Gaëlle Lucas-Leclin; Patrick Georges
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Paper Abstract

Phase-locked operation of an array of ten diode lasers is demonstrated in an extended-cavity using the Talbot self-imaging effect. An output power up to 1.7 W has been obtained. The extracavity coherent conversion of the multilobed array supermode into a Gaussian mode is investigated theoretically based on a binary phase grating. The best configuration results in a conversion efficiency of 83%. Experimentally, the conversion efficiency reaches 50% and is limited by the imperfect coherence of the laser array. We conclude that the conversion setup provides an actual measurement of the power in the selected array supermode.

Paper Details

Date Published: 27 April 2010
PDF: 7 pages
Proc. SPIE 7720, Semiconductor Lasers and Laser Dynamics IV, 77200P (27 April 2010); doi: 10.1117/12.854464
Show Author Affiliations
David Pabœuf, Lab. Charles Fabry de l'Institut d'Optique, CNRS, Univ Paris-Sud (France)
Florian Emaury, Lab. Charles Fabry de l'Institut d'Optique, CNRS, Univ Paris-Sud (France)
Sébastien de Rossi, Lab. Charles Fabry de l'Institut d'Optique, CNRS, Univ Paris-Sud (France)
Arnaud Jérome, Lab. Charles Fabry de l'Institut d'Optique, CNRS, Univ Paris-Sud (France)
Michel Lamare, Lab. Charles Fabry de l'Institut d'Optique, CNRS, Univ Paris-Sud (France)
Raymond Mercier, Lab. Charles Fabry de l'Institut d'Optique, CNRS, Univ Paris-Sud (France)
Gaëlle Lucas-Leclin, Lab. Charles Fabry de l'Institut d'Optique, CNRS, Univ Paris-Sud (France)
Patrick Georges, Lab. Charles Fabry de l'Institut d'Optique, CNRS, Univ Paris-Sud (France)


Published in SPIE Proceedings Vol. 7720:
Semiconductor Lasers and Laser Dynamics IV
Krassimir Panajotov; Marc Sciamanna; Angel A. Valle; Rainer Michalzik, Editor(s)

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