Single-cycle THz pulses enable in the strong-field regime lightwave-driven tunneling of electrons in scanning tuennling microscopes (STM). This THz-driven STM, THz-STM, combines the atomic spatial resolution of a STM with the ultrafast sub-picosecond temporal resolution of time-domain spectroscopy, Fig. 1a [1].
We present a THz-STM specifically designed for material science. Searching for...
The stationary Stark effect of electronic transitions has widely been used to determine molecular dipole moments in a weakly interacting liquid or solid environment [1]. So far, it has mainly been studied under stationary conditions with static or quasi-static electric fields of few 100kV/cm which provide a time-averaged behavior of the system under study. Chemical processes in polar liquids,...
