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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 18 — Sep. 3, 2007
  • pp: 11301–11312

Spatial-temporal structure of the femtosecond third harmonic generation in photonic-crystal fibers

Vladimir L. Kalashnikov, Evgeni Sorokin, and Irina T. Sorokina  »View Author Affiliations


Optics Express, Vol. 15, Issue 18, pp. 11301-11312 (2007)
http://dx.doi.org/10.1364/OE.15.011301


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Abstract

We analyze the third harmonic generation by the supercontinuum at 1.5 µm in nonlinear-glass microstructured fibers. The numerical model includes the real field dynamics and allows analyzing the spectral as well as the temporal structure of the generated field. The calculated third harmonic and supercontinuum spectra are compared with the experiment in the SF6 glass PCF pumped by a femtosecond Cr4+:YAG oscillator. The spectral structure of the third harmonic is composed of the 10–20 high-order modes excited at the phase matching points around 500–550 nm. The individual third harmonic modes have spectral widths of 2–4 nm. In the time domain, the third harmonic signal is a ~10-ps pulse with ps-scale slow modulation, containing subpicosecond ripples at its trailing edge.

© 2007 Optical Society of America

OCIS Codes
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(190.5530) Nonlinear optics : Pulse propagation and temporal solitons

ToC Category:
Nonlinear Optics

History
Original Manuscript: May 24, 2007
Revised Manuscript: July 19, 2007
Manuscript Accepted: August 15, 2007
Published: August 22, 2007

Citation
Vladimir L. Kalashnikov, Evgeni Sorokin, and Irina T. Sorokina, "Spatial-temporal structure of the femtosecond third harmonic generation in photonic-crystal fibers," Opt. Express 15, 11301-11312 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-18-11301


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