scispace - formally typeset
Search or ask a question
Topic

Acoustic interferometer

About: Acoustic interferometer is a research topic. Over the lifetime, 1493 publications have been published within this topic receiving 19355 citations.


Papers
More filters
Journal ArticleDOI
TL;DR: Experiments have shown that acoustic waves generated in the electrode material may cause an order-of-magnitude increase in the rate of electrode erosion as mentioned in this paper, due to the arrival of reflected acoustic waves at the electrode surface while arc "spots" are still molten.
Abstract: Experiments have been conducted to show that acoustic waves generated in the electrode material may cause an order‐of‐magnitude increase in the rate of electrode erosion. This increase is due to the arrival of reflected acoustic waves at the electrode surface while arc ’’spots’’ are still molten.

7 citations

Proceedings ArticleDOI
01 Jan 1984
TL;DR: In this paper, a YAG laser together with an axicon lens produces a focussed optical ring which excites both converging and diverging SAW on the test sample, and an optical interferometer is used to measure the vertical displacement of the SAW.
Abstract: Converging surface acoustic waves have been generated and detected using a noncontacting technique. A YAG laser together with an axicon lens produces a focussed optical ring which excites both converging and diverging SAW on the test sample. An optical interferometer is used to measure the vertical displacement of the SAW. Variations in the surface acoustic waveforms due to different optical power, beam width and shape, as well as the anisotropic and dispersive properties of the samples are analyzed. The focussing effect and the resolution of the converging surface waves are illustrated. Applications of this technique, using a full or partial optical e xcitation ring, for characterization as well as nondestructive testing of materials are discussed.

7 citations

Book
01 Jan 1985
TL;DR: In this paper, the authors describe surface acoustic waves in solids, one of the most interesting and important types of wave motion, including propagation, scattering, and interaction with electrons.
Abstract: The book describes surface acoustic waves in solids, one of the most interesting and important types of wave motion. Classification of the main currently known types of surface acoustic waves is given. Their physical properties, including the specifics of propagation, scattering, and interaction with electrons, are discussed. Much of attention is paid to surface waves in piezoelectric crystals, which play a particularly important role with regard to a variety of applications in signal processing devices. There are numerous examples illustrating various manifestations of surface acoustic waves in science and engineering.

7 citations

Journal ArticleDOI
TL;DR: In this paper, the authors considered a water surface irradiated by a powerful pulse laser and showed that an acoustic wave propagates into the water, and they divided the acoustic signal generation into two regimes according to laser intensity.
Abstract: Introduction T momentum transfer caused by a pulse laser upon a surface has been studied both in vacuum and under atmospheric conditions.' These studies were concerned primarily with surfaces of solids, i.e., aluminum, tungsten, etc. When a water surface is irradiated by a powerful pulse laser, an acoustic wave has been observed to propagate into the water.' These experimental observations were made with CO2 lasers and with small spot size (diameter d

7 citations

Journal ArticleDOI
TL;DR: In this paper, a method of measuring the sound velocity in acoustooptic dynamic active solids has been investigated based on the fact that the velocity can be determined from the frequency difference between two resonant standing-wave modes in an acoustical interferometer.
Abstract: A method of measuring the sound velocity in acoustooptic d y active solids has been investigated. The method is based upon the fact that the velocity can be determined from the frequency difference between two resonant standing-wave modes in an acoustical interferometer. Instead of measuring the transformed acoustical impedance of the interferometer, the energy in the modes is probed with a laser beam, resulting in easy and accurate measurements. The method is applied to measure the sound velocity in germanium, which is the most utilized material in acoustooptical modulators for CO2-lasers. The velocity of a longitudinal acoustical wave propagation in the [11l]-direction in single crystal germanium was found to be 5481±6 m/s at room temperature.

7 citations


Network Information
Related Topics (5)
Wave propagation
55K papers, 1.1M citations
76% related
Scattering
152.3K papers, 3M citations
72% related
Magnetic field
167.5K papers, 2.3M citations
71% related
Electron
111.1K papers, 2.1M citations
71% related
Magnetization
107.8K papers, 1.9M citations
70% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20223
20182
201722
201627
201529
201433