%0 Journal Article
%T Theoretical and experimental study of the nonlinear ultrasonic field radiated from a conical focused PVDF transducer<br>圆锥面PVDF聚焦换能器的非线性声场理论及实验研究
%A Yu Jie
%A Zhang Dong
%A Liu Xiao-Zhou
%A Gong Xiu-Fen
%A Song Fu-Xian
%A <br>于洁
%A 章东
%A 刘晓宙
%A 龚秀芬
%A 宋富先
%J 物理学报
%D 2007
%I 
%X Conical transducer offers both good lateral resolution and large depth of detecting region for ultrasonic imaging. In this paper, the superposition of Gaussian beams is utilized to simulate the source distribution of the conical focused transducer. On the basis of the KZK equation, we obtain the analytical solution of the nonlinear sound field from the conical focused source. A conical focused PVDF transducer has been fabricated in our Lab and the sound field distributions of the fundamental and second harmonic components were experimentally measured. The measured results are in reasonably good agreement with the theoretical predictions.
%K conical focused transducer
%K nonlinear
%K Gaussian beam superposition<br>圆锥面聚焦换能器
%K 非线性
%K 高斯声束叠加
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=F809F08EBD31BE22&yid=A732AF04DDA03BB3&vid=014B591DF029732F&iid=F3090AE9B60B7ED1&sid=83E0EBF3FCB77FFA&eid=ACAA71D24AF4E058&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=16