In this article, for educational purposes aimed at beginners interested in the study of ultrafast
magnetism dynamics, we offer a comprehensive methodology that covers the foundational …

Since the discovery of ultrafast demagnetization in Ni thin films in 1996, laser-induced
ultrafast spin dynamics have become a prominent research topic in the field of magnetism …

Brillouin oscillations, which are GHz frequency waves that arise from the interaction of light
with acoustic waves, are experiencing increasing applications in biology and materials …

Designing tunable optical metamaterials is one of the great challenges in photonics.
Strategies for reversible tuning of nanoengineered devices are currently being sought …

The quasi-static strain (QSS) is the product induced by the lattice thermal expansion after
ultrafast photo-excitation. Although the ultrafast spin dynamics driven by the QSS and …

We report the Jones matrix formalism of the magneto-optic Kerr effect (MOKE) for
ferromagnets using an ultrafast Sagnac interferometer. Compared to the time-resolved …

The vibrational landscape of an∼ 250 nm-radius single gold nanoparticle dropped on a
silica substrate is imaged with an ultrafast pump-probe experiment in a transient reflectivity …

The dispersion of mechanical vibration limits nano-optomechanical modulation. In this work,
we propose an optomechanical modulation exploiting elastic local resonances, also called …

We demonstrate that higher-order acoustic phonon oscillations of self-assembled Au
nanoparticles can be excited using higher frequency bandwidth picosecond acoustic pulses …

The ultrashort strain pulse is a picosecond pure mechanical stress without thermal energy,
hence it has been actively utilized for the efficient control of magnetization as new type of an …