Investigation of the Parametric Field from a Focusing Source by Using Superposition of Gaussian Beams

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2000,（11）
• 页码范围: 812-814
• 页数: 3页
• 语种: 英文

摘要

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.