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

R. Guenard, K. Krupa, R. Dupiol, M. Fabert, A. Bendahmane, V. Kermene, A. Desfarges-Berthelemot, J. L. Auguste, A. Tonello, A. Barthélémy, G. Millot, S. Wabnitz, V. Couderc

Результат исследования: Научные публикации в периодических изданияхстатья

33 Цитирования (Scopus)

Аннотация

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.

Язык оригиналаанглийский
Страницы (с-по)22219-22227
Число страниц9
ЖурналOptics Express
Том25
Номер выпуска19
DOI
СостояниеОпубликовано - 18 сен 2017

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