Abstract
The thesis deals with magnetization-induced surface second harmonic generation (MSSHG) and multiphoton photoemission, which are on a metal surface induced by ultrashort laser pulses. After describing theoretical and experimental background of 2-photon photoemission, experimental data of 2-photon to 4-photon photoemission from Cu(001) are discussed.
Different excitation pathways are described, which in specific cases include the intermediate image potential surface states (especially n=1). Attention is then focused on the MSSHG.
After theoretical and experimental introduction, experimental results on the p(1x1)O/Fe/MgO(001) system during deposition of Fe are presented. During the layer-by-layer growth of Fe the MSSHG signal oscillates.
From the experiments in different optical geometries it is deduced that the MSSHG tensor element proportional to the surface magnetization also oscillates. Last part is devoted to characterization of ultrashort laser pulses by using the interferometric autocorrelation.