论文标题
通过散射介质探索偏振涡流束生存更强的起源
Exploring the origin of stronger survival of polarized vortex beams through scattering media
论文作者
论文摘要
带有轨道角动量（OAM）的Laguerre-Gaussian（LG）梁在深层组织成像，医学诊断和光学通信中表现出了希望，这是由于它们通过散射介质的稳健传播特性而导致的。但是，到目前为止尚未建立一个确切的模型，该模型为LG梁在高斯梁上增强的散射特性提供了机制。在这里，我们通过研究通过组织样浊度散射介质传播的偏振涡流束的传播来检查这个问题。我们证明，与LG梁相比，强度对去极化的影响要高得多。我们的结果表明，观察到的高阶LG梁对较高的传播是由于入射束所见的较高的各向异性因子G所致。预计这种见解有助于在存在散射的情况下建立光传输的完整图片，并指导优化在生物医学应用中使用光的强度和极化结构。
Laguerre-Gaussian (LG) beams carrying orbital angular momentum (OAM) have shown promise in deep tissue imaging, medical diagnostics, and optical communication due to their robust propagation properties through scattering media. However, an exact model that provides a mechanism for the enhanced scattering properties of LG beams over Gaussian beams has not been established till date. Here, we examine this issue by studying the propagation of polarized vortex beams transmitted through tissue-like turbid scattering media. We demonstrate that the intensity profile has a much more profound effect on depolarization than the phase profile for LG beams. Our results indicate that the observed stronger propagation for the higher order LG beams is due to a higher anisotropy factor g as seen by the incident beam. This insight is expected to contribute towards building a complete picture of light transport in the presence of scattering, as well as guide optimization of the intensity and polarization structure of light for use in biomedical applications.
