Study on Property of Nonlinear Field of Limited-Diffraction X Waves
电子学报2010年38卷第3期 页码：512-516
作者机构：
中国科学技术大学电子科学与技术系,合肥,中国,230027
作者简介：
基金信息：
DOI：
中图分类号：R318.04
纸质出版：2010
稿件说明：
移动端阅览
FONT face, Verdana, 杜宏伟, 等. 有限衍射X波非线性声场特性研究[J]. 电子学报, 2010,38(3):512-516.
FONT face, Verdana, DU Hong-wei, et al. Study on Property of Nonlinear Field of Limited-Diffraction X Waves[J]. Acta Electronica Sinica, 2010, 38(3): 512-516.
FONT face, Verdana, 杜宏伟, 等. 有限衍射X波非线性声场特性研究[J]. 电子学报, 2010,38(3):512-516.DOI：
FONT face, Verdana, DU Hong-wei, et al. Study on Property of Nonlinear Field of Limited-Diffraction X Waves[J]. Acta Electronica Sinica, 2010, 38(3): 512-516.DOI：
<FONT face=Verdana>X waves may be used in ultrasound imaging to obtain very high frame rate. But the spatial resolution of the image with a linear imaging mode decreases as compared to conventional focused imaging. The nonlinear fields of limited-diffraction X waves are calculated and studied by solving the KZK equation using a time-domain numerical method. The result indicates that the nonlinear fields of broadband and band-limited X waves are both limited-diffraction beams. Moreover
the second harmonic component has narrower mainlobe and lower sidelobes than the fundamental field. Utilizing the second harmonic of X waves in ultrasound imaging
higher spatial resolution would be obtained throughout the entire imaging range. A theoretical analysis verifies the numerical calculation result.
京公网安备11010802024621