Open AccessTracking spectral shapes and temporal dynamics along a femtosecond filament
Author(s) -
Emilia Schulz,
Daniel S. Steingrube,
Thomas Binhammer,
Mette B. Gaarde,
Arnaud Couairon,
Uwe Morgner,
Milutin Kovačev
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.019495
Subject(s) - filamentation , protein filament , optics , femtosecond , physics , temporal resolution , tracking (education) , laser , materials science , psychology , pedagogy , composite material
The spectral evolution of a high-intensity light channel formed by filamentation is investigated in a detailed experimental study. We also track the spatio-temporal dynamics by high-order harmonic generation along the filament. Both the spectral and temporal diagnostics are performed as a function of propagation distance, by extracting the light pulses directly from the hot filament core into vacuum via pinholes that terminate the nonlinear propagation. We compare the measured spectral shapes to simulations and analyze numerically the temporal dynamics inside the filament.