Open AccessUltra-low threshold supercontinuum generation in sub-wavelength waveguides
Author(s) -
Mark A. Foster,
Alexander L. Gaeta
Publication year - 2004
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.12.003137
Subject(s) - supercontinuum , optics , materials science , femtosecond , self phase modulation , wavelength , core (optical fiber) , sapphire , octave (electronics) , nonlinear optics , optoelectronics , photonic crystal fiber , laser , physics
We show that optical waveguides with sub-wavelength transverse dimensions optimize the effective nonlinearity and provide desireable dispersive properties for generating supercontinuum with ultra-low threshold power. Using a tapered small-core microstructured fiber with a sub-wavelength diameter core, we generate an octave-spanning supercontinuum with 250 pJ pulses from a femtosecond modelocked Ti:sapphire oscillator.