Shaping Laguerre-Gaussian laser modes with binary gratings using a digital micromirror device

被引：62
作者：
Lerner, Vitaly [1 ]
Shwa, David [1 ]
Drori, Yehonathan [1 ]
Katz, Nadav [1 ]
机构：
[1] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel
来源：
OPTICS LETTERS | 2012年 / 37卷 / 23期
关键词：
HOLOGRAMS; LIGHT; COMPUTER; BEAMS; TRANSFORMATION; GENERATION;
D O I：
10.1364/OL.37.004826
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Laguerre-Gaussian (LG) beams are used in many research fields, including microscopy, laser cavity modes, and optical tweezing. We developed a holographic method to generate pure LG modes (amplitude and phase) with a binary amplitude-only digital micromirror device (DMD) as an alternative to the commonly used phase-only spatial light modulator. The advantages of such a DMD include very high frame rates, low cost, and high damage thresholds. We have shown that the propagating shaped beams are self-similar and their phase fronts are of helical shape as demanded. We estimate the purity of the resultant beams to be above 94%. (C) 2012 Optical Society of America
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收藏
页码：4826 / 4828
页数：3
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