Experimental investigation on partially coherent higher-order non-diffractive beams

We experimentally study the generation of a partially coherent non-diffractive beam by focusing a partially coherent vortex beam with an axieon. The investigation results show that when the partially coherent vortex beam is focused by the axicon, the beam is transferred into a partially coherent hig...

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Published inChinese physics B Vol. 20; no. 9; pp. 204 - 210
Main Author 陈光明 华黎闽 林惠川 蒲继摊
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.09.2011
Subjects
Beams (radiation)
Coherence
Fluid flow
Focusing
Invariants
Vortices
传播过程
光束传输
光束聚焦
实验
衍射光束
调查结果
部分相干
高阶
Online AccessGet full text
ISSN1674-1056
2058-3834
DOI10.1088/1674-1056/20/9/094203

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Summary:We experimentally study the generation of a partially coherent non-diffractive beam by focusing a partially coherent vortex beam with an axieon. The investigation results show that when the partially coherent vortex beam is focused by the axicon, the beam is transferred into a partially coherent higher-order non-diffractive beam. In the non-diffractive zone, the transverse intensity distribution of the partially coherent higher-order non-diffractive beam is invariant during propagation. In addition, the range of the non-diffractive zone is related to the coherence of the partially coherent vortex beam. The poorer the coherence of the partially coherent vortex beam, the shorter the range of the non-diffractive zone.
Bibliography:We experimentally study the generation of a partially coherent non-diffractive beam by focusing a partially coherent vortex beam with an axieon. The investigation results show that when the partially coherent vortex beam is focused by the axicon, the beam is transferred into a partially coherent higher-order non-diffractive beam. In the non-diffractive zone, the transverse intensity distribution of the partially coherent higher-order non-diffractive beam is invariant during propagation. In addition, the range of the non-diffractive zone is related to the coherence of the partially coherent vortex beam. The poorer the coherence of the partially coherent vortex beam, the shorter the range of the non-diffractive zone.
physical optics, higher-order non-diffractive Bessel beam, axicon, partially coherence
Chen Guang-Ming Hua Li-Min Lin Hui-Chuan and Pu Ji-Xiong a） College of Information Science ~ Engineering, Huaqiao University, Quanzhou 362021, China b） College of F~jian Education, F~zhou 350025, China
11-5639/O4
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ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/20/9/094203