Abstract
With the latest configuration, the Ti:Sa laser system ARCTURUS (Düsseldorf University, Germany) operates with a double-chirped pulse amplification (CPA) architecture delivering pulses with an energy of 7 J before compression in each of the two high-power beams. By the implementation of a plasma mirror system, the intrinsic laser contrast is enhanced up to $10^{-12}$ on a time scale of hundreds of picoseconds, before the main peak. The laser system has been used in various configurations for advanced experiments and different studies have been carried out employing the high-power laser beams as a single, high-intensity interaction beam ( $I\approx 10^{20}~\text{W}/\text{cm}^{2}$ ), in dual- and multi-beam configurations or in a pump–probe arrangement.
Highlights
The generation of multi-terawatt, sub-picosecond laser pulses was until recently only possible at large facilities due to the major infrastructure and personnel demands
In this paper we present the up-to-date, multi-beam architecture of the ARCTURUS laser facility and the operational physical parameters of the laser beams
By employing grating targets with tens of nanometers vertical modulation, we demonstrated that the high-order harmonic (HH) emission direction can be steered away from the specular direction due to interference and, the HH spectral composition can be controlled by the laser–target interaction conditions[37]
Summary
In this paper we present the up-to-date, multi-beam architecture of the ARCTURUS laser facility and the operational physical parameters of the laser beams. The interaction of the pulses with solid, cluster and gaseous targets was extensively investigated and a brief overview of the recent experimental studies performed in either a single- or multibeam configuration is presented. The great versatility of the laser system is shown by the different experimental configurations used for various interaction conditions
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