期刊名称：Walailak Journal of Science and Technology (WJST)
印刷版ISSN：2228-835X
出版年度：2013
卷号：11
期号：4
页码：341-347
语种：English
出版社：Institute of Research and Development, Walailak University.
摘要：Second-harmonic generation in non-linear media is investigated. A normal mode analysis is proposed based on the Westervelt equation under the second-order approximation in nonlinear acoustics. This model takes into consideration attenuation, diffraction and nonlinear effects, together with dispersion. The fundamental and second harmonic is examined. The derived method is evaluated by 2-D analytical formulas which apply to tissue medium. doi: 10.14456/WJST.2014.48
关键词：Second harmonic, normal mode, tissue, nonlinear, acoustic
