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4 papers · 1 filter
Temporal self-restoration of compressed optical filaments
L. Berge, S. Skupin, G. Steinmeyer
We numerically investigate the propagation of a self-compressed optical filament through a gas-glass-gas interface. Few-cycle light pulses survive a sudden and short order-of-magni…
Transient optical response of ultrafast nonequilibrium excited metals: Effects of electron-electron contribution to collisional absorption
Jean-Philippe Colombier, Patrick Combis, Eric Audouard +1
Approaching energy coupling in laser-irradiated metals, we point out the role of electron-electron collision as an efficient control factor for ultrafast optical absorption. The hi…
Supercontinuum generation of ultrashort laser pulses in air at different central wavelengths
S. Skupin, L. Berge
Supercontinuum generation by femtosecond filaments in air is investigated for different laser wavelengths ranging from ultraviolet to infrared. Particular attention is paid on the…
Ultrashort filaments of light in weakly-ionized, optically-transparent media
L. Berge, S. Skupin, R. Nuter +2
Modern laser sources nowadays deliver ultrashort light pulses reaching few cycles in duration, high energies beyond the Joule level and peak powers exceeding several terawatt (TW).…