E. Courtens, A. Szöke
Physical Review A
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.
E. Courtens, A. Szöke
Physical Review A
R.A. Cowley, T. Ryan, et al.
Zeitschrift für Physik B Condensed Matter
M. Mali, J. Roos, et al.
Ferroelectrics
E. Courtens
IEEE JQE