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Narrow-line coherently combined tapered laser diodes in a Talbot external cavity with a volume Bragg grating

Paboeuf, David and Lucas-Leclin, Gaëlle and Georges, Patrick and Michel, Nicolas and Krakowski, Michel and Lim, Jun and Sujecki, Slawomir and Larkins, Eric (2008) Narrow-line coherently combined tapered laser diodes in a Talbot external cavity with a volume Bragg grating. Applied Physics Letters, 93 (21). ISSN 0003-6951

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Abstract

We present the phase locking of an array of index-guided tapered laser diodes. An external cavity based on the self-imaging Talbot effect has been built. A volume Bragg grating is used as the output coupler to stabilize and narrow the spectrum at 976 nm. A power of 1.7 W is achieved in the in-phase single main lobe mode with a high visibility. We have checked that each emitter is locked to the Bragg wavelength with a 100 pm spectrum linewidth. The experimental results compare well with numerical simulations performed with two-dimensional wide-angle finite difference beam propagation method.

Item type: Article
ID code: 41503
Keywords: Bragg grating, finite difference method, laser cavity resonators, semiconductor laser arrays, Physics, Physics and Astronomy (miscellaneous)
Subjects: Science > Physics
Department: Faculty of Science > Institute of Photonics
Depositing user: Pure Administrator
Date Deposited: 17 Oct 2012 09:59
Last modified: 15 Apr 2015 11:15
URI: http://strathprints.strath.ac.uk/id/eprint/41503

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