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Laser picosecond acoustics in isotropic and anisotropic materials

Research output: Contribution to journalJournal article

Published

Journal publication date03/2000
JournalUltrasonics
Journal number1-8
Volume38
Number of pages5
Pages470-474
Original languageEnglish

Abstract

We present experimental results concerning the laser generation of picosecond acoustic pulses and their propagation in isotropic and anisotropic materials. We make use of a conventional reflectance detection technique as well as interferometric detection to probe the real and imaginary changes in reflectance. We also demonstrate the detection of transverse acoustic waves by mode conversion at an interface between an isotropic polycrystalline film and an anisotropic substrate.