Akram M Nadeem, Tong Zhaomin, Ouyang Guangmin, Chen Xuyuan, Kartashov Vladimir
University College Vestfold, Institute of Microsystems Technology, N3103 Tønsberg, Norway.
Appl Opt. 2010 Jun 10;49(17):3297-304. doi: 10.1364/AO.49.003297.
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.
我们利用空间和角度分集来减少激光照明中的散斑。同时考虑了自由空间和成像几何配置。采用快速二维扫描微镜来控制激光束。构建了一个简单的实验装置，以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，散斑对比度因子可降低至5%。
