物理学报2011，Vol.60Issue(12)：311-318,8.
小瓣数贝塞尔声束的二次谐波
Second-harmonic generation of the Bessel sound beam of several lobes
摘要
Abstract
By the Gaussian expansion approach we investigate fundamental-and second-harmonic generation in practical Bessel beams of several lobes.The analysis is based on the integral solutions of the Khokhlov-Zabolotskaya-Kuznetsov equation under the quasilinear approximation.The influence of the medium attenuation on beam profile is considered.Numerical results show that the absorption parameter has a significant effect on the beam profile of the second harmonic.Under certain circumstances,the second harmonic of a practical Bessel beam with several lobes still has the main properties of an ideal Bessel beam of infinite aperture when it propagates within its depth of field.关键词
二次谐波/贝塞尔声束/声吸收/有限孔径声束Key words
second-harmonic generation/Bessel sound beam/sound attenuation/sound beams of limited aperture分类
数理科学引用本文复制引用
戴玉蓉,丁德胜..小瓣数贝塞尔声束的二次谐波[J].物理学报,2011,60(12):311-318,8.基金项目
国家自然科学基金（批准号：11074038 10674024）资助的课题 （）
