Laser speckle reduction due to spatial and angular diversity introduced by fast scanning micromirror

被引：112

作者：

Akram, M. Nadeem ^{[1
]}

Tong, Zhaomin ^{[1
]}

Ouyang, Guangmin ^{[1
]}

Chen, Xuyuan ^{[1
]}

Kartashov, Vladimir ^{[2
]}

机构：

[1] Univ Coll Vestfold, Inst Microsyst Technol, N-3103 Tonsberg, Norway

[2] poLight AS, N-3192 Horten, Norway

来源：

APPLIED OPTICS | 2010年 / 49卷 / 17期

关键词：

CONTRAST REDUCTION; SUPPRESSION; DISPLAYS;

D O I：

10.1364/AO.49.003297

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We utilize spatial and angular diversity to achieve speckle reduction in laser illumination. Both free-space and imaging geometry configurations are considered. A fast two-dimensional scanning micromirror is employed to steer the laser beam. A simple experimental setup is built to demonstrate the application of our technique in a two-dimensional laser picture projection. Experimental results show that the speckle contrast factor can be reduced down to 5% within the integration time of the detector. (C) 2010 Optical Society of America

引用

页码：3297 / 3304

页数：8

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