We experimentally demonstrate spatial beam self-cleaning in an Yb-doped graded-index multimode fiber taper, both in passive and active configurations. The input laser beam at 1064 nm was injected for propagation from the small to the large core side of the taper, with laser diode pumping in a counterdirectional configuration. The Kerr effect permits to obtain high-beam quality amplification with no accompanying frequency conversions. As a result, our nonlinear taper amplifier may provide an important building block for multimode fiber lasers and amplifiers.

Spatial beam self-cleaning in tapered Yb-doped GRIN multimode fiber with decelerating nonlinearity / Niang, Alioune; Modotto, Daniele; Tonello, Alessandro; Mangini, Fabio; Minoni, Umberto; Zitelli, Mario; Fabert, Marc; Jima, Mesay Addisu; Egorova, ; O. N., Levchenko; Andrey, E.; Semjonov, Sergei L.; Lipatov, Denis S.; Babin, Sergey; Couderc, Vincent; Wabnitz, Stefan. - In: IEEE PHOTONICS JOURNAL. - ISSN 1943-0655. - 12:2(2020), pp. 1-8. [10.1109/JPHOT.2020.2979938]

Spatial beam self-cleaning in tapered Yb-doped GRIN multimode fiber with decelerating nonlinearity

Niang, Alioune;Mangini, Fabio;Zitelli, Mario;Couderc, Vincent;Wabnitz, Stefan
2020

Abstract

We experimentally demonstrate spatial beam self-cleaning in an Yb-doped graded-index multimode fiber taper, both in passive and active configurations. The input laser beam at 1064 nm was injected for propagation from the small to the large core side of the taper, with laser diode pumping in a counterdirectional configuration. The Kerr effect permits to obtain high-beam quality amplification with no accompanying frequency conversions. As a result, our nonlinear taper amplifier may provide an important building block for multimode fiber lasers and amplifiers.
2020
multimode optical fibers; fiber lasers; nonlinear optics; solitons
01 Pubblicazione su rivista::01a Articolo in rivista
Spatial beam self-cleaning in tapered Yb-doped GRIN multimode fiber with decelerating nonlinearity / Niang, Alioune; Modotto, Daniele; Tonello, Alessandro; Mangini, Fabio; Minoni, Umberto; Zitelli, Mario; Fabert, Marc; Jima, Mesay Addisu; Egorova, ; O. N., Levchenko; Andrey, E.; Semjonov, Sergei L.; Lipatov, Denis S.; Babin, Sergey; Couderc, Vincent; Wabnitz, Stefan. - In: IEEE PHOTONICS JOURNAL. - ISSN 1943-0655. - 12:2(2020), pp. 1-8. [10.1109/JPHOT.2020.2979938]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1380440
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