High-Frequency Monochromatic Acoustic Waves Generated by Laser-Induced Thermomodulation
- 22 May 1995
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 74 (21), 4249-4252
- https://doi.org/10.1103/physrevlett.74.4249
Abstract
Monochromatic acoustic waves are produced in a single crystal of PbMo by periodic heating of a deposited Au film over an area about 40 m in diameter by two interfering single-frequency dye lasers. Detection of these waves at optical difference frequencies up to 4 GHz is accomplished by Brillouin scattering. The generated power depends on the film thickness by acoustic interference within the film. Besides weak phonon defocusing effects, the divergence of the generated acoustic wave is limited by Fraunhofer diffraction.
Keywords
This publication has 14 references indexed in Scilit:
- Thermal boundary resistanceReviews of Modern Physics, 1989
- Surface generation and detection of phonons by picosecond light pulsesPhysical Review B, 1986
- Laser-induced phonon spectroscopy. Optical generation of ultrasonic waves and investigation of electronic excited-state interactions in solidsPhysical Review B, 1981
- Laser induced phonons: A probe of intermolecular interactions in molecular solidsThe Journal of Chemical Physics, 1980
- Heat Pulses in Quartz and Sapphire at Low TemperaturesPhysical Review Letters, 1964
- Generation of Elastic Waves by Transient Surface HeatingJournal of Applied Physics, 1963
- Sources of Sound in Piezoelectric CrystalsThe Journal of the Acoustical Society of America, 1960
- Excitation and Attenuation of Hypersonic Waves in QuartzPhysical Review B, 1960
- Piezoelectric Production of Microwave PhononsPhysical Review Letters, 1959
- Excitation of Very-High-Frequency Sound in QuartzPhysical Review Letters, 1958