Work

Kerr self-cleaning of femtosecond-pulsed beams in graded-index multimode fiber

Year: 2016

Type: article

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.

Source: Optics Letters

DOI: 10.1364/ol.41.003675

Authors: Zhanwei Liu, Logan G. Wright, Demetrios N. Christodoulides, Frank W. Wise

Institutions: Cornell University, University of Central Florida

Language: English

Topic: Photonic Crystal and Fiber Optics

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funders: Natural Sciences and Engineering Research Council of Canada, Office of Naval Research

Award: G8902258220