螺旋光束经过振幅型衍射光学元件的传输特性及其拓扑电荷数的测量

doi:10.7498/aps.61.174202

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摘要：本文提出了一种利用空间光调制器生成杨氏双缝和三角孔等振幅型衍射光学元件的方法. 利用平面波角谱衍射公式和柯林斯公式研究了螺旋光束经过这两种衍射元件后的传输特性, 并利用杨氏双缝和三角孔实现了螺旋光束拓扑电荷数的测量. 由于空间光调制器可以方便和高精度地改变光学器件的几何尺寸和所在的空间位置, 因此可便捷地实现螺旋光束拓扑电荷数的测量.
关键词：螺旋光束衍射拓扑电荷数空间光调制器

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	辛璟焘
	高春清
	李辰
	王铮

Abstract： A new method is proposed to generate amplitude diffractive optical elements such as Young's double-slits and triangular apertures from a spatial light modulator (SLM). With the help of plane wave angular spectrum diffraction formula and Collins formula, the propagation property of helical beams passing through those two amplitude optical elements is studied, and the measurement of topological charge of helical beams is also achieved with those two amplitude diffractive optical elements. Due to the fact that the SLM can flexibly and accurately change the configurations and locations of optical elements, the measurements can be conveniently achieved.
Keywords： helical beams diffraction topological charge spatial light modulator

收稿日期: 2012-02-07

PACS:	42.25.Kb	(Coherence)
	42.50.Ex	(Optical implementations of quantum information processing and transfer)
	42.87.Bg	(Phase shifting interferometry)

引用本文:

辛璟焘,高春清,李辰等 . 螺旋光束经过振幅型衍射光学元件的传输特性及其拓扑电荷数的测量. 物理学报, 2012, 61(17): 174202.

Cite this article:

Xin Jing-Tao,Gao Chun-Qing,Li Chen et al. Propagation of helical beams through amplitude diffractive optical elements and the measurement of topological charge. Acta Phys. Sin., 2012, 61(17): 174202.

URL:

http://wulixb.iphy.ac.cn/CN/Y2012/V61/I17/174202 或 http://wulixb.iphy.ac.cn/CN/10.7498/aps.61.174202

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