Ultrasonic Focusing Gaussian Source to Receive Nonlinearly Generated Second Harmonic Sound by Itself
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概要
- 論文の詳細を見る
A focusing source to concurrently detect the nonlinearly generated second harmonic sound contained in the reflected wave has been produced. A 36° rotated Y-cut LiNbO3 plate of 20 MHz fundamental resonance frequency with a reversed polarization layer formed by heat treatment is bonded to a plane surface of a solid acoustic lens whose thickness is set at a small value so as to avoid the influences of nonlinear distortion and multiple reflection within the lens. One of the electrodes on the piezoelectric plate is fabricated to a 20-point-star shape. The formation of a 20 MHz focused Gaussian beam and the capability of receiving the 40 MHz second harmonic sound are confirmed through experiments.
- Publication Office, Japanese Journal of Applied Physics, Faculty of Science, University of Tokyoの論文
- 2001-05-30
著者
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KAMEYAMA Yoshinori
Faculty of Marine Science and Technology, Tokai University
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Saito Shigemi
Faculty Of Marine Science And Technology Tokai University
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Nakamura Kiyoshi
Graduate School Of Engineering Tohoku University
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Kameyama Yoshinori
Faculty of Marine Science and Technology, Tokai University, Orido, Shimizu 424-8610, Japan
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Saito Shigemi
Faculty of Marine Science and Technology, Tokai University, Orido, Shimizu 424-8610, Japan
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