Fundamentals of picosecond laser ultrasonics.

The aim of this article is to provide an introduction to picosecond laser ultrasonics, a means by which gigahertz-terahertz ultrasonic waves can be ge...
2MB Sizes 6 Downloads 7 Views

Recommend Documents

A scanning acoustic microscope based on picosecond ultrasonics.
We report on the development of a new type of scanning acoustic microscope. We use a femtosecond light pulse to generate a short sound pulse, and then focus this sound onto the sample by means of a specially designed and microfabricated acoustic lens

From laser ultrasonics to optical manipulation.
During the interaction of a laser pulse with the surface of a solid object, the object always gains momentum. The delivered force impulse is manifested as propulsion. Initially, the motion of the object is composed of elastic waves that carry and red

Picosecond laser welding of similar and dissimilar materials.
We report picosecond laser welding of similar and dissimilar materials based on plasma formation induced by a tightly focused beam from a 1030 nm, 10 ps, 400 kHz laser system. Specifically, we demonstrate the welding of fused silica, borosilicate, an

Boosting laser-ion acceleration with multi-picosecond pulses.
Using one of the world most powerful laser facility, we demonstrate for the first time that high-contrast multi-picosecond pulses are advantageous for proton acceleration. By extending the pulse duration from 1.5 to 6 ps with fixed laser intensity of

532-nm Dual-Wavelength Picosecond Laser.
Picosecond-domain laser pulses improve the photomechanical disruption of tattoos.

Characterizing phantom arteries with multi-channel laser ultrasonics and photo-acoustics.
Multi-channel photo-acoustic and laser ultrasonic waves are used to sense the characteristics of proxies for healthy and diseased vessels. The acquisition system is non-contacting and non-invasive with a pulsed laser source and a laser vibrometer det

Laser damage density measurement of optical components in the sub-picosecond regime.
A rasterscan procedure adapted to the sub-picosecond regime is set to determine laser-induced damage densities as function of fluences. Density measurement is carried out on dielectric high-reflective coatings operating at 1053 nm. Whereas laser-indu

Monolithically integrated selectable repetition-rate laser diode source of picosecond optical pulses.
We describe the characterization of a monolithically integrated photonic device for short pulse generation featuring a mode-locked laser diode, a Mach-Zehnder modulator (MZM), and a semiconductor optical amplifier (SOA). The integrated device is desi