Sine-azimuthal wavefront-modulated cosh-Gaussian beams with half-space amplitude modulation

被引：3

作者：

Fu, Rui ^{[1
]}

Gao, Xiumin ^{[1
]}

Shen, Haibin ^{[2
]}

Xin, Qing ^{[1
]}

Lu, Xinmiao ^{[1
]}

机构：

[1] Hangzhou Dianzi Univ, Elect & Informat Coll, Hangzhou 310018, Zhejiang, Peoples R China

[2] China Jiliang Univ, Hangzhou 310018, Zhejiang, Peoples R China

来源：

OPTIK | 2014年 / 125卷 / 05期

关键词：

Focusing properties; Cosh-Gaussian beams; Amplitude modulation; LASER-BEAMS; STRUCTURED-ILLUMINATION; FOCUSING PROPERTIES; MICROSCOPY; PROPAGATION; MEDIA; DEPTH; LIGHT;

D O I：

10.1016/j.ijleo.2013.10.006

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Half-space amplitude modulation was introduced into the linearly polarized cosh-Gaussian beams with sine-azimuthal variation wavefront, and corresponding tunable focal patterns were investigated in detail. Simulation results show that focal pattern can be changed remarkably by the amplitude modulation. And under condition of different beam parameters and phase parameter that indicates the sine-azimuthal variation wavefront, the focal pattern evolution also differs considerably. Some novel focal shape may appear, including cross-shape, multiple-peak focal pattern, multiple intensity lines, wheel focal pattern, bell shape, and swallowtail focal spots. Symmetry of the whole focal pattern can be altered remarkably, the whole focal pattern evolves into uniaxial symmetry about perpendicular axes for odd and even phase parameter, respectively. (C) 2013 Elsevier GmbH. All rights reserved.

引用

页码：1687 / 1693

页数：7

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