Supercontinuum generation with a chirped-pulse oscillator.
We demonstrate the generation of a high power ultrabroadband supercontinuum by coupling the uncompressed pulses from a Ti:Sapphire Chirped-pulse oscillator into a photonic crystal fibre that exhibits a highly anomalous dispersion at the centre wavelength of the laser. Our simulations show that the pulses first undergo quasi-linear compression before the actual supercontinuum is generated by soliton fission dynamics. This two-step process results in an optical spectrum that is remarkably independent on the input pulse energy. Moreover, the reduced peak intensity at the input facet of the fibre mitigates damage problems and allows the generation of high power white-light radiation.
Fuerbach
A
A
Centre for Ultrahigh-bandwidth Devices for Optical Systems, MQPhotonics Research Centre, Macquarie University, Sydney, NSW, Australia. fuerbach@physics.mq.edu.au
Miese
C
C
Koehler
W
W
Geissler
M
M