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Proceedings Paper

Numerical analysis of external feedback concepts for spectral stabilization of high-power broad-area semiconductor lasers
Author(s): Carlo Holly; Stefan Hengesbach; Martin Traub; Dieter Hoffmann
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Paper Abstract

Four different external resonator concepts including VBGs for spectral stabilization of HPDLs are modelled and numerically evaluated to be compared to each other with respect to stabilization efficiency and sensitivity to the “smile-error". The coupled resonators including the external system and the diode laser are solved with a Fox-Li approach. The paper gives a brief summary about the applied simulation model and proceeds with the results for the different feedback concepts. The effective reflectivity, losses in the optical system, losses due to the back-coupling into the waveguide and the averaged optical confinement factor are calculated.

Paper Details

Date Published: 7 March 2014
PDF: 8 pages
Proc. SPIE 8965, High-Power Diode Laser Technology and Applications XII, 89650K (7 March 2014); doi: 10.1117/12.2037053
Show Author Affiliations
Carlo Holly, RWTH Aachen (Germany)
Stefan Hengesbach, RWTH Aachen (Germany)
Martin Traub, Fraunhofer-Institut für Lasertechnik (Germany)
Dieter Hoffmann, Fraunhofer-Institut für Lasertechnik (Germany)


Published in SPIE Proceedings Vol. 8965:
High-Power Diode Laser Technology and Applications XII
Mark S. Zediker, Editor(s)

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