In this work, we improve the performance of an optically pumped spintronic terahertz emitter
(STE) by a factor of up to 6 in field amplitude through an optimized photonic and thermal …

The understanding of how spins move and can be manipulated at pico-and femtosecond
timescales has implications for ultrafast and energy-efficient data-processing and storage …

Spin-based technologies can operate at terahertz frequencies but require manipulation
techniques that work at ultrafast timescales to become practical. For instance, devices based …

We study ultrafast magnetization quenching of ferromagnetic iron following excitation by an
optical versus a terahertz pump pulse. While the optical pump (photon energy of 3.1 eV) …

The ultrafast dynamics of electrons and collective modes in systems out of equilibrium is
crucially governed by the energy transfer from electronic degrees of freedom, where the …

Reliable modulation of terahertz electromagnetic waveforms is important for many
applications. Here, we rapidly modulate the direction of the electric field of linearly polarized …

We investigate the spin dynamics driven by terahertz magnetic fields in epitaxial thin films of
cobalt in its three crystalline phases. The terahertz magnetic field generates a torque on the …

We describe the design of two types of metamaterials aimed at enhancing terahertz field
pulses that can be used to control the magnetic state in condensed matter systems. The first …

The recent thrust in ultrafast magnetization dynamics aims at extending spintronic
functionalities to terahertz frequencies. Deterministic manipulation of magnetization at the …

In the realm of open quantum systems, steady states and high-harmonic generation (HHG)
existing far from equilibrium have become core pillars of ultrafast science. Most solid-state …