Open AccessBack-seeding of higher order gain processes in picosecond supercontinuum generation
Author(s) -
Peter M. Moselund,
Michael H. Frosz,
Carsten Thomsen,
Ole Bang
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.011954
Subject(s) - supercontinuum , optics , picosecond , four wave mixing , seeding , wavelength , dispersion (optics) , mixing (physics) , nonlinear optics , photonic crystal fiber , physics , materials science , laser , quantum mechanics , thermodynamics
In photonic crystal fibers with closely spaced zero dispersion wavelengths it is possible to have two pairs of four-wave mixing (FWM) gain peaks. Here, we demonstrate both numerically and experimentally how the outer four-wave mixing gain peaks can be used to produce a strong amplification peak in a picosecond supercontinuum. The method involves feeding back part of the output light of a SC source and time matching it with the pump light. In this way it is possible to produce a gain of over 20 dB near the FWM gain wavelengths.