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Investigation of the Parametric Field from a Focusing Source by Using Superposition of Gaussian Beams |
| ZHANG Dong;GONG Xiu-Fen;LU Rong-Rong |
| State Key Laboratory of Modern Acoustics, Institute of Acoustics, Nanjing University, Nanjing 210093 |
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| Cite this article: |
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ZHANG Dong, GONG Xiu-Fen, LU Rong-Rong 2000 Chin. Phys. Lett. 17 812-814 |
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Abstract The superposition method of Gaussian beams is extended to describe the acoustical parametric field from a focusing source. The axial sound pressure of the difference frequency wave 1MHz generated due to the interaction of two primary wave 3.5 and 4.5MHz is theoretically calculated by using 10 items of Gaussian functions. Experimental results coincide well with the calculated results except for the case at the vicinity of the focusing source.
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| Keywords:
43.25.Ba
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Published: 01 November 2000
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| PACS: |
43.25.Ba
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(Parameters of nonlinearity of the medium)
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