Acoustic Fields of Bulk Acoustic Waves Excited by Phase Velocity Scanning of Laser Interference Fringes.
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- Nishino Hideo
- Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
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- Tsukahara Yusuke
- Technical Research Institute, TOPPAN Printing Co., Ltd., 4-2-3 Takanodai-Minami, Sugito-machi, Kitakatsushika-gun, Saitama 345-8579, Japan
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- Takemoto Mikio
- Faculty of Science and Engineering, Aoyama Gakuin University, 6-16-1 Chitosedai, Setagaya-ku, Tokyo 157-8579, Japan
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- Yamanaka Kazushi
- Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
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Abstract
Directivity and generation efficiency of transverse and longitudinal bulk acoustic waves (BAWs) excited by phase velocity scanning (PVS) of laser interference fringes were theoretically investigated. Formulas were derived for the BAW generation based on scanning interference fringes (SIF) which were produced by intersecting two coherent laser beams with different frequencies on an opaque specimen. It was deduced that the amplitude of the BAW was proportional to the product of the scanning length of the SIF and the directivity pattern due to the thermoelastic line source. Unidirectionality of the BAW generated by the SIF was theoretically verified in an ideal state.
Journal
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- Japanese Journal of Applied Physics
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Japanese Journal of Applied Physics 41 (4A), 2256-2261, 2002
The Japan Society of Applied Physics
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Details 詳細情報について
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- CRID
- 1390282681232910336
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- NII Article ID
- 110006341146
- 210000051192
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- NII Book ID
- AA10457675
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- ISSN
- 13474065
- 00214922
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- NDL BIB ID
- 6148731
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed