Small beam nonparaxiality arrests self-focusing of optical beams

Gadi Fibich*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


A new equation for self-focusing in the presence of small beam nonparaxiality is derived. Analysis of this equation shows that nonparaxiality remains small as the beam propagates. Nevertheless, nonparaxiality arrests self-focusing when the beam width becomes comparable to its wavelength. A series of focusing-defocusing cycles of decreasing magnitude follows, ending with a final defocusing stage.

Original languageEnglish
Pages (from-to)4356-4359
Number of pages4
JournalPhysical Review Letters
Issue number23
StatePublished - 1996
Externally publishedYes


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