T. Bischofberger, E. Courtens
Physical Review Letters
New results about the self-focusing of gaussian beams in nonlinear index media are presented. The focusing behavior of initially convergent beams is particularly interesting for powers near the critical power. © 1970.
T. Bischofberger, E. Courtens
Physical Review Letters
E. Courtens, A. Szöke
Physics Letters A
E. Courtens, R. Vacher
Zeitschrift für Physik B Condensed Matter
E. Courtens, K.A. Müller
EPL