Title :
Visualization of laser-generated SAW beams by shake-off of fine particles
Author :
Kolomenskii, Al.A. ; Maznev, A.A.
fDate :
Oct. 31 1994-Nov. 3 1994
Abstract :
Shake-off of micron-sized alumina particles by nanosecond laser-generated SAW pulses is used to visualize SAW propagation on the surfaces of semiconductor crystals. Different phenomena in SAW propagation such as reflection from an edge, deviation of a SAW beam from the phase velocity direction and anisotropic diffraction are demonstrated. SAW focusing on the (001) surface of GaAs is studied
Keywords :
III-V semiconductors; acoustic focusing; acoustic pulses; acoustic variables measurement; acoustic wave diffraction; acoustic wave reflection; gallium arsenide; laser beam effects; photoacoustic effect; surface acoustic waves; anisotropic diffraction; beam steering; edge reflection; focusing; micron-sized alumina fine particles; nanosecond laser-generated SAW pulses; phase velocity; semiconductor crystals; shake-off; visualization; Acoustic beam focusing; Acoustic beam steering; Acoustic diffraction; Acoustic measurements; Acoustic pulses; Acoustic reflection; Gallium materials/devices; Laser radiation effects; Photoacoustic materials/effects; Surface acoustic waves;
Conference_Titel :
Ultrasonics Symposium, 1994. Proceedings., 1994 IEEE
Conference_Location :
Cannes, France
Print_ISBN :
0-7803-2012-3
DOI :
10.1109/ULTSYM.1994.401608
