Transient Second Harmonic Generation Induced by Single Cycle THz pulses in Ba_0.8Sr_0.2TiO₃/MgO.

ABSTRACT: The ability to switch ferroics (magnets, ferroelectrics, multiferroics) between two stable bit states is the main principle of modern data storage technology. Due to many new ideas, originating from fundamental research during the last 50 years, this technology has developed in a breath-taking fashion. Ever increasing demands for faster and more energy efficient data storage strongly motivate fundamental studies of dynamics in ferroics triggered by ultrashort stimuli. It has been recently realized that nearly single cycle intense THz pulses and the phenomenon of the second harmonic generation are appealing tools for excitation and detection of poorly understood ultrafast dynamics of electric polarization in ferroelectrics at the picosecond timescale. Here we investigate picosecond dynamics

SUBMITTER: Grishunin K 

PROVIDER: S-EPMC6346021 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature