Volt-per- Å ngstrom terahertz fields from X-ray free-electron lasers

The electron linear accelerators driving modern X-ray free-electron lasers can emit intense, tunable, quasi-monochromatic terahertz (THz) transients with peak electric fields of V   Å − 1 and peak magnetic fields in excess of 10   T when a purpose-built, compact, superconducting THz undulator is implemented. New research avenues such as X-ray movies of THz-driven mode-selective chemistry come into reach by making dual use of the ultra-short GeV electron bunches, possible by a rather minor extension of the infrastructure.

Source: Journal of Synchrotron Radiation - April 28, 2020 Category: Physics Authors: Tanikawa, T. Karabekyan, S. Kovalev, S. Casalbuoni, S. Asgekar, V. Bonetti, S. Wall, S. Laarmann, T. Turchinovich, D. Zalden, P. Kampfrath, T. Fisher, A.S. Stojanovic, N. Gensch, M. Geloni, G. Tags: superradiant emission terahertz radiation X-ray free-electron laser ultrafast phenomena terahertz control short communications Source Type: research