The TERESA (TEstbed for high REpetition-rate Sources of Accelerated particles) target area, recently commissioned with the L3-HAPLS laser at Extreme Light Infrastructure (ELI)-Beamlines, is presented. Its key technological sections (vacuum and control systems, laser parameters and laser beam transport up to the target) are described, along with an overview of the available plasma diagnostics and targetry, tested at relativistic laser intensities. Perspectives of the TERESA laser–plasma experimental area at ELI-Beamlines are briefly discussed.
In this work we have studied fundamental passive and active parameters of new family of erbium and ytterbium doped zinc-silicate glasses with different doping concentration and ratio of erbium and ytterbium ions. Parameters as absorption coefficient, saturation of absorption, emission wavelength, fluorescence lifetime and up-conversion spectra were measured. The laser performance was studied in end-diode pumped configuration with hemispherical resonator. As an excitation source a 30W fiber coupled 975 nm laser diode in pulsed regime was used. Laser action was achieved with four different samples of zinc-silicate glasses on wavelengths ranging from 1540nm to 1570nm. The results were compared with the properties of commercially available phosphate glasses and previous zinc-silicate glass which have similar threshold energy corresponding to 3,3mJ and 3mJ respectively. Newly designed zinc-silicate glasses prepared under improved conditions showed substantially better optical and laser properties in comparison with the previously prepared samples.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.