Filamentation of ultra-short TW-class lasers recently opened new perspectives in
atmospheric research. Laser filaments are self-sustained light structures of 0.1–1 mm in …

We present an ultrafast thin-disk based multipass amplifier operating at a wavelength of
1030 nm, designed for atmospheric research in the framework of the Laser Lightning Rod …

Atmospheric clearness is a key issue for free space optical communications (FSO). We
present an active method to achieve FSO through clouds and fog, using ultrashort high …

The recent development of high average, high peak power lasers has revived the effort of
using lasers as a potential tool to influence natural lightning. Although impressive, the …

Supercontinuum (SC) light source has advanced ultrafast laser spectroscopy in condensed
matter science, biology, physics, and chemistry. Compared to the frequently used photonic …

The guiding and transport of energy, for example, of electromagnetic waves, underpins
many modern technologies, ranging from long-distance optical fibre telecommunications to …

The bulk aerosol emissions excited by externally focused femtosecond laser filaments are
characterized using time-resolved plasma imaging and spectroscopy. Images of N_2 and …

Filamentation has extensively been explored and is well understood at repetition rates< 1
kHz due to the typical availability of multi-mJ laser systems at a moderate average power …

Atmospheric aerosols, such as water droplets in fog, interfere with laser propagation through
scattering and absorption. Femtosecond optical filaments have been shown to clear foggy …

We investigated the filamentation in air of 7 ps laser pulses of up to 200 mJ energy from a
1.03 μm-wavelength Yb: YAG laser at repetition rates up to f= 1kHz. Interferograms of the …