Pump-probe experiments on Er coupled Si-nanocrystals rib-loaded waveguides

Pump-probe experiments at 1.54 m on silicon-rich silicon oxide waveguides

Delay control in attosecond pump-probe experiments.

The time delay between the pump and probe pulses in attosecond time-resolved experiments, such as attosecond streaking, is commonly introduced by splitting and recombining the two pulses in an interferometer. This technique suffers from instability in the optical path lengths of the two arms due to mechanical vibration of the optical elements and fluctuating environmental conditions. We present...

Theory of pump-probe experiments of metallic metamaterials coupled to a gain medium.

We establish a new approach for pump-probe simulations of metallic metamaterials coupled to the gain materials. It is of vital importance to understand the mechanism of the coupling of metamaterials with the gain medium. Using a four-level gain system, we have studied light amplification of arrays of metallic split-ring resonators with a gain layer underneath. We find that the differential tran...

Pump-Probe Experiments at High Energy Densities Performed at PHELIX

Matter at extremes of density and temperature occurs widely in astrophysical objects such as giant gas planets or highly evolved stars. Accurate modelling of matter at high energy density (HED) is of great importance in understanding the structure and evolution of these objects [1]. Creation of electromagnetic HED plasmas in the laboratory requires very powerful drivers. Intense heavy ion pulse...

Tunable Bragg reflectors on silicon-on-insulator rib waveguides.

We present the design, fabrication and characterization of Bragg reflectors on silicon-on-insulator rib waveguides. The fabrication is based on a new double lithographic process, combining electron-beam lithography for the grating and photolithography for the waveguides. This process allows the realization of low loss reflectors, which were fully characterized. The influence of the etching dept...