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

机译:快速扫描微镜带来的空间和角度分集导致的激光散斑减少

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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 5percent within the integration time of the detector.
机译:我们利用空间和角度分集来减少激光照明中的斑点。自由空间和成像几何配置均被考虑。快速二维扫描微镜用于控制激光束。建立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,在检测器的积分时间内,斑点对比度系数可以降低到5%。

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