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arXiv 2007.09050physics.optics
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使用复杂介质的光谱分辨点扩散函数工程

Spectrally-resolved point-spread-function engineering using a complex medium

Antoine Boniface, Mickaël Mounaix, Baptiste Blochet, Hilton B. de Aguiar, Fabien Quéré, Sylvain Gigan

摘要:

超短光脉冲在强散射介质中的传播产生了复杂的空间-光谱散斑,可以用多光谱传输矩阵(MSTM)来描述。与空间光调制器结合使用,MSTM能够操纵离开介质的脉冲;特别是将其聚焦在任何所需的空间位置和/或时间。在这里,我们演示了如何工程师的点扩散函数的聚焦光束的空间和光谱,从测量的MSTM。它包括在聚焦之前对矩阵的每个波长处的空间内容进行数字滤波。我们实验报告的多功能性的技术,通过几个例子,特别是作为一种替代同时空间和时间聚焦,在多光子显微镜的潜在应用。

英文摘要:

Propagation of an ultrashort pulse of light through strongly scattering media generates an intricate spatio-spectral speckle that can be described by means of the multi-spectral transmission matrix (MSTM). In conjunction with a spatial light modulator, the MSTM enables the manipulation of the pulse leaving the medium; in particular focusing it at any desired spatial position and/or time. Here, we demonstrate how to engineer the point-spread-function of the focused beam both spatially and spectrally, from the measured MSTM. It consists in numerically filtering the spatial content at each wavelength of the matrix prior to focusing. We experimentally report on the versatility of the technique through several examples, in particular as an alternative to simultaneous spatial and temporal focusing, with potential applications in multiphoton microscopy.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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