An improved nonlinear optical pulse propagation equation

M. Trippenbach, W. Wasilewski*, P. Kruk, G. W. Bryant, G. Fibich, Y. B. Band

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


A new equation for self-focusing of extremely focused short-duration intense pulses is derived using a method that treats diffraction and dispersion to all orders with nonlinearity present, and self-consistently determines the nonlinear derivative terms present in the propagation equation. It generalizes both the previous formulation of linear optical pulse propagation to the nonlinear regime, and the cw nonlinear regime propagation to the pulsed regime by including temporal characteristics of the pulse. We apply the new equation and propagate a tightly focused picosecond pulse in silica and explicitly show the effects of spatial-derivative nonlinear coupling terms.

Original languageEnglish
Pages (from-to)385-391
Number of pages7
JournalOptics Communications
Issue number3-6
StatePublished - 15 Sep 2002


FundersFunder number
Israel MOD Research and Technology Unit
Israel Science Foundation212/01


    • Nonparaxial
    • Pulse propagation
    • Self-focusing
    • Ultrafast


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