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

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 نشر من قبل Alioune Niang
 تاريخ النشر 2019
  مجال البحث فيزياء
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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



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