111 citations · 173 across the 2 of their papers we have counts for
5 papers
Boosting terahertz generation in laser-field ionized gases using a sawtooth wave shape
P. González de Alaiza Martínez, I. Babushkin, L. Bergé +6
Broadband ultrashort terahertz (THz) pulses can be produced using plasma generation in a noble gas ionized by femtosecond two-color pulses. Here we demonstrate that, by using multi…
On the Saturation of the Nonlinear Refractive Index in Atomic Gases
Christian Köhler, Roland Guichard, Emmanuel Lorin +4
Motivated by the ongoing controversy on the origin of the nonlinear index saturation and subsequent intensity clamping in femtosecond filaments, we study the atomic nonlinear polar…
Tailoring THz radiation by controlling tunnel photoionization events in gases
I. Babushkin, S. Skupin, A. Husakou +4
Applications ranging from nonlinear terahertz spectroscopy to remote sensing require broadband and intense THz radiation which can be generated by focusing two-color laser pulses i…
Ultrafast spatio-temporal dynamics of terahertz generation by ionizing two-color femtosecond pulses in gases
I. Babushkin, W. Kuehn, C. Koehler +6
We present a combined theoretical and experimental study of spatio-temporal propagation effects in terahertz (THz) generation in gases using two-color ionizing laser pulses. The ob…
Compression of ultrashort UV pulses in a self-defocusing gas
L. Berge, C. Koehler, S. Skupin
Compression of UV femtosecond laser pulses focused into a gas cell filled with xenon is reported numerically. With a large negative Kerr index and normal dispersion, xenon promotes…