Wavelength-stabilized tapered laser diodes in an external talbot cavity: simulations and experiments

David Pabœuf (1) , Gaëlle Lucas-Leclin (1) , Patrick Georges (1) , Nicolas Michel (2) , Michel Krakowski (2) , Jun Lim (3) , Slawomir Sujecki (3) , Eric Larkins (3)

1 Laboratoire Charles Fabry de l'Institut d'Optique / Elsa
2 III-V Lab - Alcatel-Thalès III-V lab
3 The School of Electronic and Electrical Engineering

We present the experimental and theoretical evaluation of the coherent combining of an array of index-guided tapered laser diodes in an external Talbot cavity. A theoretical model taking into account the propagation inside the semiconductor device has been developed to determine the cavity spatial modes. In parallel, experiments have been realized with 10 emitters in a compact setup and a volume Bragg grating as the external mirror. 1.7 W have been obtained at 976 nm for the in-phase mode in a narrow laser line (<0.1 nm).

Keywords: Bragg gratings; Semiconductor laser array; Talbot effect; Laser modeling

Domains: Optics [physics.optics]; Optics / Photonic

David Pabœuf, Gaëlle Lucas-Leclin, Patrick Georges, Nicolas Michel, Michel Krakowski, et al.. Wavelength-stabilized tapered laser diodes in an external talbot cavity: simulations and experiments. Photonics West - LASE 2009, Jan 2009, San Jose, United States. pp.71981L. ⟨hal-00523980⟩