Dynamic nonlinear focal shift in amplitude modulated moderately focused acoustic beams
نویسندگان
چکیده
منابع مشابه
Focal shift in vector beams.
We examine the three-dimensional intensity distribution of vector Bessel-Gauss beams with general polarization near the focus of a nonaperturing thin lens. Recently reported linearly and azimuthally polarized Bessel-Gauss beams are members of this family. We define the width and focal plane of such a vector beam using an encircled-energy criterion and calculate numerically that, as for scalar b...
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ژورنال
عنوان ژورنال: Ultrasonics
سال: 2017
ISSN: 0041-624X
DOI: 10.1016/j.ultras.2016.11.021