Time-domain terahertz ellipsometry and polarimetric applications of spintronic emitters

Abstract

The diploma thesis concerns terahertz emitters based on spintronic phenomena, as new broad-band sources with magnetically controllable emission. Terahertz emission from original spintronic structure with uniaxial magnetic anisotropy was measured. The relation between magnetization and polarization properties of terahertz emission is experimentally demonstrated and modeled. The ultra-fast dynamics of pulsed electromagnetic fields exciting spintronic layers is simulated. The time-dependent distributions of electromagnetic fields, energy fluxes, and power densities inside ultra-thin spintronic layers are calculated. Obtained absorptions in spintronic films during the pulse propagation are used to compare design of several spintronic emitters. Terahertz time-domain ellipsometry and polarimetric applications of spintronic emitters are discussed.