Supercontinuum Generation by Stimulated Raman Scattering and Parametric Four-Wave Mixing in Photonic Crystal Fibers

Supercontinuum generation is investigated experimentally and numerically in a highly nonlinear indexguiding photonic crystal optical fiber in a regime in which self-phase modulation of the pump wave makes a negligible contribution to spectral broadening. An ultrabroadband octave-spanning white-light continuum is generated with 60-ps pump pulses of subkilowatt peak power. The primary mechanism of spectral broadening is identified as the combined action of stimulated Raman scattering and parametric four-wave mixing. The observation of a strong anti-Stokes Raman component reveals the importance of the coupling between stimulated Raman scattering and parametric four-wave mixing in highly nonlinear photonic crystal fibers and also indicates that non-phase-matched processes contribute to the continuum. Additionally, the pump input polarization affects the generated continuum through the influence of polarization modulational instability. The experimental results are in good agreement with detailed numerical simulations. These findings demonstrate the importance of index-guiding photonic crystal fibers for the design of picosecond and nanosecond supercontinuum light sources. © 2002 Optical Society of America.

White-Light Supercontinuum Generation with 60-ps Pump Pulses in a Photonic Crystal Fiber

The generation of a spatially single-mode white-light supercontinuum has been observed in a photonic crystal fiber pumped with 60-ps pulses of subkilowatt peak power. The spectral broadening is identified as being due to the combined action of stimulated Raman scattering and parametric four-wave-mixing generation, with a negligible contribution from the self-phase modulation of the pump pulses. The experimental results are in good agreement with detailed numerical simulations. These findings demonstrate that ultrafast femtosecond pulses are not needed for efficient supercontinuum generation in photonic crystal fibers. © 2001 Optical Society of America.

Single-mode white-light supercontinuum with 60 ps pump pulses in a photonic crystal fiber

info:eu-repo/semantics/published

Letter of attorney, 1767

Document empowering John Harvey and Samuel Johnston to act as Barker's representatives to recover a debt from the estate of Dr. John Craven of North Carolina and to settle Barker's affairs and dispose of his property in North Carolina. Dated 23 May 1767.

Taxation and economic development in Ghana.

Cover title

The ten pleasures of marriage and the second part The confession of the new married couple, attributed to Aphra Behn; reprinted with an introduction

With reproductions of original title-pages: (1) The ten pleasures of marriage, relating all the delights and contentments that are mask'd under the bands of matrimony. Written by A. Marsh, typogr. [Ornament] London, Printed in the year, 1682. (2) The confession of the new married couple, being the second part of the Ten pleasures of marriage. Relating the further delights and contentments that ly mask'd under the bands of wedlock. Written by A. Marsh. Typogr. [Ornament] London, Printed in the year 1683.

Character and the actor : a lecture delivered before the Ethological Society /

Mode of access: Internet.

The history and topographical survey of the county of Kent. Containing the antient and present state of it, civil and ecclesiastical;

Vol. 13 is a made-up volume containing maps and folded plans.

The griper : being a letter to John Harvey, esq. in reply to his ungenerous animadversions, in a public assembly, in the old library room on the 14th of December, on my speech delivered at the weavers' meeting, on the 7th of December, 1829, at the Pantheon, St. Stephen's Norwich ; with many additional remarks, political, and theological, on the present state of our nation ; and on general principles.

Mode of access: Internet.

The Dameron-Damron genealogy; the descendants of Lawrence Dameron of Virginia, with notes on the related Northumberland county families of Gaskins, Harvey, Bledsoe, Tignor, Ball, Coppedge-Coppage, Waddy, Taylor, Smith, and the John Ladd Family originating Lower Norfolk county, Virginia.

Kept up by appendices issued at irregular intervals.

Catalogue of a collection of works on ritualism and doctrinal theology, presented by John Harvey Treat.

Cover-title.

Lectures on plant physiology. Authorized English translation by R.J. Harvey Gibson.

main vol.

Biographical memoirs of medicine in Great Britain : From the revival of literature to the time of Harvey /

Mode of access: Internet.