Precise sound velocity measurement by laser ultrasound and its applicationto temperature measurement of solid materials

Authors
Matsuda, Y Nakano, H Nagai, S
Citation
Y. Matsuda et al., Precise sound velocity measurement by laser ultrasound and its applicationto temperature measurement of solid materials, ANAL SCI, 17, 2001, pp. S219-S220
Citations number
7
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
ANALYTICAL SCIENCES
ISSN journal
09106340 → ACNP
Volume
17
Year of publication
2001
Pages
S219 - S220
Database
ISI
SICI code
0910-6340(2001)17:<S219:PSVMBL>2.0.ZU;2-G
Abstract
A sound velocity measurement system based on high frequency laser ultrasoun d has been developed. The system employs a 140 MHz ultrasonic rf burst gene rated using a mode-locked laser and pulse-echo-overlap method for precise v elocity measurement. As an application, longitudinal velocity in a [100] si licon single crystal 0.45 mm thick was measured with a precision of 160 ppm at room temperature.