Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Supercontinuum generation in air–silica microstructured fibers with nanosecond and femtosecond pulse pumping

Not Accessible

Your library or personal account may give you access

Abstract

We study the generation of supercontinua in air–silica microstructured fibers by both nanosecond and femtosecond pulse excitation. In the nanosecond experiments, a 300-nm broadband visible continuum was generated in a 1.8-m length of fiber pumped at 532 nm by 0.8-ns pulses from a frequency-doubled passively Q-switched Nd:YAG microchip laser. At this wavelength, the dominant mode excited under the conditions of continuum generation is the LP11 mode, and, with nanosecond pumping, self-phase modulation is negligible and the continuum generation is dominated by the interplay of Raman and parametric effects. The spectral extent of the continuum is well explained by calculations of the parametric gain curves for four-wave mixing about the zero-dispersion wavelength of the LP11 mode. In the femtosecond experiments, an 800-nm broadband visible and near-infrared continuum has been generated in a 1-m length of fiber pumped at 780 nm by 100-fs pulses from a Kerr-lens model-locked Ti:sapphire laser. At this wavelength, excitation and continuum generation occur in the LP01 mode, and the spectral width of the observed continuum is shown to be consistent with the phase-matching bandwidth for parametric processes calculated for this fiber mode. In addition, numerical simulations based on an extended nonlinear Schrödinger equation were used to model supercontinuum generation in the femtosecond regime, with the simulation results reproducing the major features of the experimentally observed spectrum.

© 2002 Optical Society of America

Full Article  |  PDF Article
More Like This
Ultrashort pulse propagation in air-silica microstructure fiber

Brian R. Washburn, Stephen E. Ralph, and Robert S. Windeler
Opt. Express 10(13) 575-580 (2002)

Supercontinuum generation by stimulated Raman scattering and parametric four-wave mixing in photonic crystal fibers

Stéphane Coen, Alvin Hing Lun Chau, Rainer Leonhardt, John D. Harvey, Jonathan C. Knight, William J. Wadsworth, and Philip St. J. Russell
J. Opt. Soc. Am. B 19(4) 753-764 (2002)

Frequency-tunable supercontinuum generation in photonic-crystal fibers by femtosecond pulses of an optical parametric amplifier

Andrei B. Fedotov, Aleksandr N. Naumov, Aleksei M. Zheltikov, Ignac Bugar, Dusan Chorvat, Dusan Chorvat, Alexander P. Tarasevitch, and Dietrich von der Linde
J. Opt. Soc. Am. B 19(9) 2156-2164 (2002)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (2)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved