Optimization of forward-scattered light energy and de-coherence of Mie scattering for speckle suppression

Optimization of forward-scattered light energy and de-coherence of Mie scattering for speckle suppression
复制标题

用于散斑抑制的前向散射光能量和米氏散射去相干的优化

DOI:
10.1007/s11082-014-9907-1
复制
发表时间:
2015-02
影响因子:
3
通讯作者:
Xuyuan Chen
Xuyuan Chen
中科院分区:
工程技术4区
文献类型:
--
作者:
YanhongWang;Pengfei Zhao;Wenhong Gao;Xuyuan Chen

文献摘要

参考文献

相似文献

在不损失能量的情况下降低激光的相干性对于激光投影仪中的散斑抑制至关重要。在本文中,超过90%的入射光是前向散射与完全去相干。我们在ZEMAX中模拟了一个含有粒子的散射体作为散射介质,研究了前向散射光能量和去相干性与粒子浓度、粒子归一化半径和折射率比m的关系。通过改变所有三个参数,获得了实现完全去相干的多个参数组合,并且这些参数组合被用于散斑抑制。在这些组合下,前向散射光能量损失高达入射光的60- 70%。但是,在较小的颗粒浓度下,损失迅速下降。当颗粒浓度设定为时,根据米氏散射理论,通过调节和m,前向散射光的能量可以达到入射光的90%以上。分析了散射体的结构参数L,使前向散射光占入射光的90%以上。这些结果对散射粒子参数的选择和散斑抑制用散射体的设计具有指导意义。
Reducing the coherence of laser light without energy loss is critical for speckle suppression in laser projectors. In this paper, it is shown that more than 90 % of incident light is forward-scattered with complete de-coherence. We modeled a scattering volume with particles in ZEMAX as a scattering medium and studied the forward-scattered light energy and de-coherence dependence on the following three parameters: particle concentration, normalized radius of particlesand refractive index ratio m. By varying all three parameters, a number of parameter combinations to achieve complete de-coherence are obtained, and which are utilized for speckle suppression. The forward-scattered light energy loss is up to 60–70 % of incident light at these combinations. But, at smaller particle concentration, the loss drops quickly. When setting the particle concentration at, the forward-scattered light energy can be more than 90 % of incident light by adjustingand m according to Mie scattering theory. The structure parameter L of the scattering volume is also analyzed to collect forward-scattered light more than 90 % of incident light. These results can benefit the parameters’ choice of scattering particles and the design of a scattering volume used for speckle suppression.
DOI: 10.1364/oe.21.013032
发表时间: 2013-06
期刊: Optics express
影响因子: 3.8
作者:
Gaoming Li;Y. Qiu;Hui Li
通讯作者: Gaoming Li;Y. Qiu;Hui Li
DOI: 10.1016/0021-8502(86)90063-7
发表时间: 1986-04-01
影响因子: 4.5
作者:
KONIG, G;ANDERS, K;FROHN, A
通讯作者: FROHN, A
DOI: 10.1080/716099663
发表时间: 1984
影响因子: 1.3
作者:
R.G.W. Brown
通讯作者: R.G.W. Brown
DOI: 10.1007/978-3-642-28738-1
发表时间: 2012
期刊: --
影响因子: --
作者:
W. Hergert;T. Wriedt
通讯作者: W. Hergert;T. Wriedt
DOI: --
发表时间: 2009-09
期刊: --
影响因子: --
作者:
F. Riechert
通讯作者: F. Riechert