The threshold at which self-focusing initially dominates the dynamics of short-pulse propagation in normally dispersive bulk media, causing an explosive increase in peak intensity, is estimated analytically and verified numerically. Intensity-dependent propagation effects such as spectral broadening also occur explosively at this threshold.
© 1994 Optical Society of America
Original Manuscript: November 23, 1993
Published: June 15, 1994
G. G. Luther, E. M. Wright, J. V. Moloney, and A. C. Newell, "Self-focusing threshold in normally dispersive media," Opt. Lett. 19, 862-864 (1994)