Time-resolved measurements of self-focusing pulses in air.
The spatial, spectral, and temporal properties of self-focusing 798-nm 100-fs pulses in air are experimentally measured with high-resolution, single-shot techniques at a set propagation distance of 10.91 m. The data, obtained with an initially collimated Gaussian beam, show significant evolution of spatial narrowing as well as temporal and spectral changes at intensities lower than those required for significant ionization of air.
Bernstein
A C
AC
Department of Physics, University of New Mexico, 800 Yale Boulevard NE, Albuquerque, New Mexico 87131, USA. abernste@unm.edu
Diels
J C
JC
Luk
T S
TS
Nelson
T R
TR
McPherson
A
A
Cameron
S M
SM