In this review we address the microscopic mechanisms that are involved in the
photogeneration processes of GHz–THz coherent acoustic phonons (CAP) induced by an …

Understanding and controlling vibrations in condensed matter is emerging as an essential
necessity both at fundamental level and for the development of a broad variety of …

The aim of this article is to provide an introduction to picosecond laser ultrasonics, a means
by which gigahertz–terahertz ultrasonic waves can be generated and detected by ultrashort …

Generation of strain using light is a key issue for future development of ultrasonic devices.
Up to now, photo-induced GHz–THz acoustic phonons have been mainly explored in metals …

We show that the magnetization of a thin ferromagnetic (Ga, Mn) As layer can be modulated
by picosecond acoustic pulses. In this approach a picosecond strain pulse injected into the …

The bias voltage applied to a weakly coupled n-doped GaAs/AlAs superlattice increases the
amplitude of the coherent hypersound oscillations generated by a femtosecond optical …

Using an optical technique we generate and detect picosecond shear and quasishear
coherent acoustic phonon pulses in the time domain. Thermoelastic and piezoelectric …

Coherent phonons can be launched in materials upon localized pulsed optical excitation,
and be subsequently followed in time-domain, with a sub-picosecond resolution, using a …

We apply time-resolved x-ray diffraction using ultrashort x-ray pulses from a laser-produced
plasma to probe the picosecond acoustic response of a thin laser-heated gold film …

Picosecond acoustic-phonon pulse generation and detection is investigated in a sample
containing three GaAs∕ Al 0.3 Ga 0.7 As quantum wells of different thickness with an …