标题： 非线性荧光激发通过多重散射介质的传输矩阵方法 显示英文标题

标题： Transmission matrix approaches for non-linear fluorescence excitation through multiple scattering media

摘要： 几种矩阵方法被开发出来，以在超短光脉冲照射下控制光通过多重散射介质的传播。 这些矩阵可以以光谱或时间分辨率进行记录。 得益于波前整形，已经实现了时间和空间的聚焦。 在本工作中，我们研究了如何利用这些不同方法来增强双光子激发荧光过程。 我们首先在微米级的孤立荧光珠上比较了不同的技术。 然后，我们展示了对位于厚散射介质后的这种荧光微球进行点扫描成像，在该深度常规成像由于散射效应而无法实现。 显示英文摘要

摘要： Several matrix approaches were developed to control light propagation through multiple scattering media under illumination of ultrashort pulses of light. These matrices can be recorded either with spectral or temporal resolution. Thanks to wavefront shaping, temporal and spatial refocusing have been demonstrated. In this work, we study how these different methods can be exploited to enhance a two-photon excitation fluorescence process. We first compare the different techniques on micrometer-size isolated fluorescent beads. We then demonstrate point-scanning imaging of such fluorescent microbeads located after a thick scattering medium, at a depth where conventional imaging would be impossible because of scattering effects.