Laser speckle reduction due to spatial and angular diversity introduced by fast scanning micromirror
Laser speckle reduction due to spatial and angular diversity introduced by fast scanning micromirror
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DOI：
10.1364/ao.49.003297
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发表时间：
2010-06-10
期刊：
影响因子：
1.9
通讯作者：
Kartashov, Vladimir
中科院分区：
文献类型：
--
作者：
Akram, M. Nadeem;Tong, Zhaomin;Kartashov, Vladimir
我们利用空间和角度的多样性，以实现减少散斑激光照明。自由空间和成像几何配置被认为是。一个快速的二维扫描光栅被用来控制激光束。建立了一个简单的实验装置来演示我们的技术在二维激光图像投影中的应用。实验结果表明，在探测器的积分时间内，散斑对比度因子可以降低到5%以下。(C)2010年美国光学学会
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