发表机构
Indiana University Bloomington（印第安纳大学布卢明顿分校）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文实验证明时空波包在体积散射下能保持结构完整性和传播特性，优于高斯光束，有望用于深层三维生物医学显微成像。
AI 中文摘要
光学时空波包（STWPs）可以被设计为在长距离上维持紧密的横向约束。然而，这种行为背后所需的精确时空相关性是否能在体积散射中幸存下来，目前尚不清楚。在这里，我们通过实验证明，横向厚度为11和22微米的STWP光片在穿过10毫米厚的散射幻影（散射系数=0.84每毫米）后，很大程度上保留了其预定的时空结构。此外，与尺寸匹配的高斯光束相比，STWPs在散射后在其预定的时空域内表现出对其初始光谱强度分布的更大保留。另外，透射后的STWPs仍然保持紧密约束，并保持与未散射对应物相似的轴上强度衰减率。由于散射条件跨越了生物学相关范围，STWPs对散射的结构和传播鲁棒性突显了它们在深度扩展的三维生物医学显微镜中的潜力。
英文摘要
Optical space-time wave packets (STWPs) can be engineered to sustain tight transverse confinement over long distances. However, whether the requisite precise spatiotemporal correlations underlying this behavior survive volumetric scattering remains unclear. Here, we experimentally demonstrate that STWP light sheets with transverse thicknesses of 11 and 22 microns largely retain their prescribed spatiotemporal structure after transmission through 10 mm thick scattering phantoms (scattering coefficient = 0.84 per mm). Moreover, compared with size-matched Gaussian beams, STWPs exhibit greater preservation of their initial spectral intensity distribution across the prescribed space-time domain following scattering. Additionally, the transmitted STWPs remain tightly confined and preserve on-axis intensity decay rates similar to those of their unscattered counterparts. As the scattering conditions span biologically relevant regimes, the structural and propagation resilience of STWPs to scattering highlights their potential for extended-depth 3D biomedical microscopy.
Comments15 pages
