Visible Supercontinuum Generation In A Graded Index Multimode Fiber Pumped At 1064 Nm

Abstract

We observe efficient supercontinuum generation that extends into the visible spectral range by pumping a low differential mode group delay graded index multimode fiber in the normal dispersion regime. For a 28.5 m long fiber, the generated spectrum spans more than two octaves, starting from below 450 nm and extending beyond 2400 nm. The main nonlinear mechanisms contributing to the visible spectrum generation are attributed to multipath four-wave mixing processes and periodic spatio-temporal breathing dynamics. Moreover, by exploiting the highly multimodal nature of this system, we demonstrate versatile generation of visible spectral peaks in shorter fiber spans by altering the launching conditions. A nonlinearly induced mode cleanup was also observed at the pump wavelength. Our results could pave the way for high brightness, high power, and compact, multi-octave continuum sources.

Publication Date

6-1-2016

Publication Title

Optics Letters

Volume

41

Issue

11

Number of Pages

2253-2256

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1364/OL.41.002553

Socpus ID

84975064408 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84975064408

This document is currently not available here.

Share

COinS