Laser ultrasonic testing is widely used in many fields, but there exist some problems, such
as the complexity of the signal component and the distraction of noise signal, remain …

Scanning acoustic microscopy techniques operating at frequencies in the gigahertz range
are suitable for the elastic characterization and interior imaging of solid media with …

We present a laser-ultrasound measurement technique which combines adjustable spatial
and temporal modulation of the excitation laser beam. Our method spreads the intensity of …

The current work presents a correlation-based detection technique with application in
modulated laser-ultrasonics. In standard use of coded sequences the impulse response of a …

The last decades have seen the rapid development of laser ultrasonic (LU) techniques for
remote inspection for composite structures. However, it is still challenging for current LU …

Ultrasonic waves are sensitive to the elastic properties of solids and have been applied in a
variety of nondestructive materials characterization and metrology applications. The spatial …

A superheterodyne approach to the detection of laser generated acoustic waves is
presented. An amplitude modulated laser source is used to generate high frequency, narrow …

In this paper, we present an overview of research in the area of narrow-bandwidth
generation and detection of ultrasound using a technique referred to as frequency domain …

We use a spatial light modulator to shape the excitation laser spot of a laser-ultrasound
system. With periodic excitation patterns we are able to excite ultrasound waves of a …

Nanoelectromechanical Systems (NEMS) are electromechanical systems with critical
dimensions in the sub-micron range. NEMS are often operated in their fundamental …