Highly efficient few-mode spatial beam self-cleaning at 1.5µm

Y. Leventoux, A. Parriaux, O. Sidelnikov, G. Granger, M. Jossent, L. Lavoute, D. Gaponov, M. Fabert, A. Tonello, K. Krupa, A. Desfarges-Berthelemot, V. Kermene, G. Millot, S. Février, S. Wabnitz, V. Couderc

Результат исследования: Научные публикации в периодических изданияхстатья

Аннотация

We experimentally demonstrate that spatial beam self-cleaning can be highly efficient when obtained with a few-mode excitation in graded-index multimode optical fibers. By using 160 ps long, highly chirped (6 nm bandwidth at -3dB) optical pulses at 1562 nm, we demonstrate a one-decade reduction of the power threshold for spatial beam self-cleaning, with respect to previous experiments using pulses with laser wavelengths at 1030-1064 nm. Self-cleaned beams remain spatio-temporally stable for more than a decade of their peak power variation. The impact of input pulse temporal duration is also studied.

Язык оригиналаанглийский
Страницы (с-по)14333-14344
Число страниц12
ЖурналOptics Express
Том28
Номер выпуска10
DOI
СостояниеОпубликовано - 11 мая 2020

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