Related Experiment Video
Updated: May 31, 2026
06:16
Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing
Published on: April 25, 2019
Self-focusing collapse distance in ultrashort pulses and measurement of nonlinear index
P Whalen1, J V Moloney, M Kolesik
1College of Optical Sciences, University of Arizona, Tucson, Arizona 85721, USA.
Optics Letters
|July 5, 2011
Abstract:
We analyze the method of moving focus to determine the critical power for self-focusing by means of numerical simulation and a semianalytical model. It is shown that the original interpretation of a moving focus experiment does not hold in general and that inclusion of defocusing effects due to free electrons is necessary to relate the measured data to critical power.
