Orbital angular moment of a partially coherent beam propagating through an astigmatic ABCD optical system with loss or gain

被引：43

作者：

Cai, Yangjian ^{[1
]}

Zhu, Shijun ^{[1
]}

机构：

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

来源：

OPTICS LETTERS | 2014年 / 39卷 / 07期

关键词：

SCHELL-MODEL BEAMS; FRACTIONAL FOURIER-TRANSFORM; PHASE-INDUCED REDUCTION; TURBULENT ATMOSPHERE; GAUSSIAN-CAVITY; TWIST PHASE; LIGHT; SCINTILLATION; GENERATION; STATISTICS;

D O I：

10.1364/OL.39.001968

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We derive the general expression for the orbital angular momentum (OAM) flux of an astigmatic partially coherent beam carrying twist phase [i.e., twisted anisotropic Gaussian-Schell model (TAGSM) beam] propagating through an astigmatic ABCD optical system with loss or gain. The evolution properties of the OAM flux of a TAGSM beam in a Gaussian cavity or propagating through a cylindrical thin lens are illustrated numerically with the help of the derived formula. It is found that we can modulate the OAM of a partially coherent beam by varying the parameters of the cavity or the orientation angle of the cylindrical thin lens, which will be useful in some applications, such as free-space optical communications and particle trapping. (C) 2014 Optical Society of America

引用

页码：1968 / 1971

页数：4

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