Continuous manipulation of doughnut focal spot in a large scale

被引：9

作者：

Hao, Xiang ^{[1
]}

Kuang, Cuifang ^{[1
]}

Li, Yanghui ^{[1
]}

Liu, Xu ^{[1
]}

机构：

[1] Zhejiang Univ, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Peoples R China

来源：

OPTICS EXPRESS | 2012年 / 20卷 / 12期

基金：

国家教育部博士点专项基金资助;

关键词：

CYLINDRICAL-VECTOR BEAMS; DARK HOLLOW BEAM; FLUORESCENCE DEPLETION; RESOLUTION; MICROSCOPY; INTERFEROMETRY; POLARIZATION; GENERATION; OPTICS;

D O I：

10.1364/OE.20.012692

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We theoretically demonstrate that the doughnut focal spot can continuously be manipulated by synthetically using various beam modulation techniques. Comparatively, a more evident effect can be expected by different orders of phase modulation, while accurate manipulation stems from changing the phase diversity between two arms in an image inverting interferometer (III). The size of central dark spot can thus be continuously adjusted in a theoretically infinite scale, although it may actually be limited by resolution of Spatial Light Modulator (SLM). This approach brings additional flexibility to many applications, such as optical tweezers. (c) 2012 Optical Society of America

引用

页码：12692 / 12698

页数：7

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