Rapid broadband characterization of scattering medium using hyperspectral imaging
Rapid broadband characterization of scattering medium using hyperspectral imaging
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DOI：
10.1364/optica.6.000274
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发表时间：
2019-03-20
期刊：
影响因子：
10.4
通讯作者：
Gigan, Sylvain
中科院分区：
文献类型：
--
作者：
Boniface, Antoine;Gusachenko, Ivan;Gigan, Sylvain
相干超短光脉冲被无序介质散射会产生复杂的时空散斑图。图案的形式可以通过光谱相关的传输矩阵的知识来描述，该光谱相关的传输矩阵又可以用于对脉冲通过介质的传播进行整形。我们介绍了一种方法，用于快速测量该矩阵的整个光谱的脉冲的基础上的高光谱成像系统，接近2个数量级的速度比以前报道的任何方法。我们演示了窄带以及时空重新聚焦的飞秒脉冲时间拉伸到几皮秒后，通过多重散射介质的传播。这使得通过复杂介质进行多光子成像和操作的新途径成为可能。由The Optical Society根据Creative Commons Attribution 4.0 License条款发布。
Scattering of a coherent ultrashort pulse of light by a disordered medium results in a complex spatiotemporal speckle pattern. The form of the pattern can be described by knowledge of a spectrally dependent transmission matrix, which can in turn be used to shape the propagation of the pulse through the medium. We introduce a method for rapid measurement of this matrix for the entire spectrum of the pulse based on a hyperspectral imaging system that is close to 2 orders of magnitude faster than any approach previously reported. We demonstrate narrowband as well as spatiotemporal refocusing of a femtosecond pulse temporally stretched to several picoseconds after propagation through a multiply scattering medium. This enables new routes for multiphoton imaging and manipulation through complex media. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License.