Manipulation of orbital angular momentum beams based on space diffraction compensation

被引：8
|
作者：
Zhou, Hailong [1 ]
Dong, Jianji [1 ]
Yan, Siqi [1 ]
Zhou, Yifeng [1 ]
Shi, Lei [1 ]
Zhang, Xinliang [1 ]
机构：
[1] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China
来源：
OPTICS EXPRESS | 2014年 / 22卷 / 15期
基金：
中国国家自然科学基金;
关键词：
VORTEX BEAM; PHOTONS; FIBERS; STATES;
D O I：
10.1364/OE.22.017756
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We put forward a technique to manipulate the size of orbital angular momentum (OAM) beams based on space diffraction compensation. Paraxial Fresnel diffraction which carries a negative spatial quadratic phase distribution can be regarded as a negative diffractive effect. To compensate the negative diffraction, we employ a 4f Fourier lens system containing a phase mask to generate an inverse quadratic phase. The size of OAM beams can be easily controlled by designing the phase mask profile without changing the OAM. The applications of space diffraction compensation in OAM demultiplexing, ring fiber coupling for OAM beams and optical manipulation of micro particles are also discussed. (C) 2014 Optical Society of America
引用
收藏
页码：17756 / 17761
页数：6
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