Needle Beam Generated by a Laser Beam Passing Through a Scattering Medium

被引：14

作者：

Chen, Ziyang ^{[1
]}

Hu, Xiansheng ^{[1
]}

Ji, Xuanxuan ^{[1
]}

Pu, Jixiong ^{[1
]}

机构：

[1] Huaqiao Univ, Coll Informat Sci & Engn, Fujian Prov Key Lab Light Propagat & Transformat, Xiamen 361021, Peoples R China

来源：

IEEE PHOTONICS JOURNAL | 2018年 / 10卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Speckle; optical field modulation; LIGHT;

D O I：

10.1109/JPHOT.2018.2871216

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The propagation of coherent light through an inhomogeneous medium generates a speckle pattern caused by the complex interference of randomly scattered waves. The speckle pattern does not resemble the incident beam profile. However, the spatially random pattern can be reshaped into a bright focal spot by wavefront shaping. And, in general, the focused intensity is of maximum just at the focal plane, and the focused intensity of the shaped focal beam decreases sharply with incremental distance from the focal plane. In this paper, we report the experimental generation of a needle beam as the laser beam passes through a scattering medium. The intensity and beam size of the needle beam remain nearly intact within the distance of 25 mm, which indicates that the focal pattern has a uniform property.

引用

页数：8

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