Shaping the beam profile of a partially coherent beam by a phase aperture

被引：5

作者：

Wu, Gaofeng ^{[1
]}

Cai, Yangjian ^{[1
]}

Chen, Jun ^{[2
]}

机构：

[1] Soochow Univ, Sch Phys Sci & Technol, Suzhou 215006, Peoples R China

[2] China Jiliang Univ, Coll Opt & Elect Technol, Hangzhou 310018, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2011年 / 284卷 / 18期

基金：

中国国家自然科学基金;

关键词：

Beam shaping; Partially coherent beam; Phase aperture; Propagation; DARK HOLLOW BEAMS; FRACTIONAL FOURIER-TRANSFORM; SCHELL-MODEL BEAMS; FLAT-TOPPED BEAMS; PROPAGATION FACTOR; GAUSSIAN BEAMS; SPECTRAL SHIFT; GENERATION; TURBULENCE; M-2-FACTOR;

D O I：

10.1016/j.optcom.2011.05.006

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

By use of a tensor method, an analytical formula for a partially coherent Gaussian Schell-model (GSM) beam truncated by a circular phase aperture propagating through a paraxial ABCD optical system is derived. The propagation properties of a GSM beam truncated by a circular phase aperture in free space are studied numerically. It is found that the circular phase aperture can be used to shape the beam profile of a GSM beam and generate partially coherent dark hollow or flat-topped beam, which is useful in many applications, e.g., optical trapping, free-space optical communication, and material thermal processing. The propagation factor of a GSM beam truncated by a circular phase aperture is also analyzed. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：4129 / 4135

页数：7

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