Laser generation of acoustic waves in an anisotropic medium; parametric analysis for application to material characterization

2003 ◽  
Vol 74 (1) ◽  
pp. 470-473 ◽  
Author(s):  
C. Rossignol ◽  
H. Meri ◽  
B. Audoin
Keyword(s):  
Anisotropic Medium ◽  
Acoustic Waves ◽  
Material Characterization ◽  
Parametric Analysis ◽  
Laser Generation

Laser generation of high amplitude surface acoustic waves

1990 ◽  
Author(s):  
V. Dymshakov ◽  
A. Dychne ◽  
Fedor V. Lebedev ◽  
Vladislav D. Pis'mennyi
Keyword(s):  
Acoustic Waves ◽  
Surface Acoustic Waves ◽  
High Amplitude ◽  
Laser Generation

Laser generation of acoustic waves in the ablative regime

1999 ◽  
Vol 85 (4) ◽  
pp. 2031-2040 ◽  
Author(s):  
Todd W. Murray ◽  
James W. Wagner
Keyword(s):  
Acoustic Waves ◽  
Laser Generation

Scanning Electron-Acoustic Microscopy: Do You Know Its Capabilities?

MRS Bulletin ◽  
1996 ◽  
Vol 21 (10) ◽  
pp. 42-46 ◽  
Author(s):  
M. Urchulutegui
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Acoustic Waves ◽  
Material Characterization ◽  
Sample Surface ◽  
Acoustic Microscopy ◽  
Photoacoustic Microscopy ◽  
Characterization Methods ◽  
Electron Acoustic ◽  
Scanning Electron

Characterization of materials usually requires microscopy techniques. Some of the most useful are based on a scanning microscope and involve scanning the sample surface with a focused beam (e.g., photons, electrons, ions, etc.). For example, photoacoustic microscopy uses a laser beam, acoustic microscopy uses an ultrasound beam, and scanning electron microscopy uses an electron beam. The interaction between the material and the beam produces a signal that can be used to generate a two-dimensional image.In scanning photoacoustic microscopy (SPAM), an intensity-modulated light beam is used to produce oscillations in the surface temperature of the sample. These oscillations induce changes in the pressure of a fluid in the photoacoustic cell as a consequence of the periodic heat conduction from the surface to the cell fluid. Subsequently many material-characterization methods have employed the same philosophy as SPAM, using a modulated beam as an excitation probe. The breadth of such techniques is due to the large number of possible excitation sources and signal detectors that have been proposed to probe the specimen response. In particular, scanning electron-acoustic microscopy (SEAM), also referred to as thermal wave microscopy, is a technique based on the utilization of a scanning electron microscope developed in 1980 and applied in recent years to material characterization. It can be considered an additional mode of scanning electron microscopy (SEM), which uses the generation of acoustic waves in the sample. Most reviews have concentrated on the application of SEAM to metals and semiconductors. However many other possibilities exist.

Laser generation of acoustic waves in liquids and gases

1986 ◽  
Vol 60 (7) ◽  
pp. R83-R122 ◽  
Author(s):  
Markus W. Sigrist
Keyword(s):  
Acoustic Waves ◽  
Laser Generation
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