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Article Dans Une Revue Optics Express Année : 2017

Nonlinear beam self-cleaning in a coupled cavity composite laser based on multimode fiber

R. Guenard
  • Fonction : Auteur
Fabert Marc
Guy Millot

Résumé

We study a coupled cavity laser configuration where a passively Q-switched Nd:YAG microchip laser is combined with an extended cavity, including a doped multimode fiber. For appropriate coupling levels with the extended cavity, we observed that beam self-cleaning was induced in the multimode fiber thanks to nonlinear modal coupling, leading to a quasi-single mode laser output. In the regime of beam self-cleaning, laser pulse duration was reduced from 525 to 225 ps. We also observed a Q-switched mode-locked operation, where spatial self-cleaning was accompanied by far-detuned nonlinear frequency conversion in the active multimode fiber.

Dates et versions

hal-01631161 , version 1 (08-11-2017)

Identifiants

Citer

Alain Barthélémy, R. Guenard, Katarzyna Krupa, R. Dupiol, Fabert Marc, et al.. Nonlinear beam self-cleaning in a coupled cavity composite laser based on multimode fiber. Optics Express, 2017, 25 (19), pp.22219-22227. ⟨10.1364/OE.25.022219⟩. ⟨hal-01631161⟩
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