论文标题
复杂介质中的散射光的散射模式
Scattering invariant modes of light in complex media
论文作者
论文摘要
无序介质中光的随机散射是与各种应用的基本相关性的有趣现象。尽管波前塑形和传输矩阵测量等技术已为高级成像概念带来了显着的进步，但通过无序介质获得清晰图像的最成功策略仍然是弹道光的过滤。但是，具有无散射繁殖的弹道光子是指数罕见的，到目前为止，没有任何方法可以增加其比例。为了解决这些局限性，我们在这里介绍并实现了一组新的光学状态，我们称我们散射不变模式（SIMS），它们的传输场模式是相同的，无论它们是通过无序样品散射还是通过均质介质散射弹性。我们观察到仅在密集的散射培养基中弱衰减的SIMS，并在模拟中显示它们与弹道光的相关性可用于改善散射材料内部的成像。
Random scattering of light in disordered media is an intriguing phenomenon of fundamental relevance to various applications. While techniques such as wavefront shaping and transmission matrix measurements have enabled remarkable progress for advanced imaging concepts, the most successful strategy to obtain clear images through a disordered medium remains the filtering of ballistic light. Ballistic photons with a scattering-free propagation are, however, exponentially rare and no method so far can increase their proportion. To address these limitations, we introduce and experimentally implement here a new set of optical states that we term Scattering Invariant Modes (SIMs), whose transmitted field pattern is the same, irrespective of whether they scatter through a disordered sample or propagate ballistically through a homogeneous medium. We observe SIMs that are only weakly attenuated in dense scattering media, and show in simulations that their correlations with the ballistic light can be used to improve imaging inside scattering materials.
