Kerr Self-Cleaning Of Femtosecond-Pulsed Beams In Graded-Index Multimode Fiber

Abstract

We observe a nonlinear spatial self-cleaning process for femtosecond pulses in graded-index (GRIN) multimode fiber (MMF). Pulses with ∼80 fs duration at 1030 nm are launched into GRIN MMF with 62.5 μm core. The near-field beam profile at the output end of the fiber evolves from a speckled pattern to a centered, bell-shaped transverse structure with increasing pulse energy. The experimental observations agree well with numerical simulations, which show that the Kerr nonlinearity underlies the process. This self-cleaning process may find applications in ultrafast pulse generation and beam-combining.

Publication Date

8-15-2016

Publication Title

Optics Letters

Volume

41

Issue

16

Number of Pages

3675-3678

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1364/OL.41.003675

Socpus ID

84983035998 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84983035998

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