Accession Number : ADP007082

Title :   Resistance of Short Pulses to Self-Focusing,

Corporate Author : NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO)

Personal Author(s) : Strickland, D. ; Corkum, P. B.

Report Date : 22 MAY 1992

Pagination or Media Count : 2

Abstract : Self-focusing arises in all materials, gases, liquids, solids or plasmas. Yet, it has been investigated only in the limit where the beam diameter is significantly less than the pulse length (c) tau where tau is the pulse duration). In this case, the beam is predicted to self-focus to moving singularities in the absence of other nonlinear efforts. However, there is another extreme which is rarely, if ever, noted where the beam diameter is much larger than the pulse length and the pulse will disperse before any self-focusing can occur. Short pulse self-focusing is more related to the second extreme than the first.

Descriptors :   *DYE LASERS, *COHERENT OPTICAL RADIATION, YAG LASERS, SHORT PULSES, LASER BEAMS, NONLINEAR SYSTEMS, SHORT WAVELENGTHS, COHERENT RADIATION, SYMPOSIA.

Subject Categories : Optics
      Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE