用于超快三维无标记显微镜的多光谱反射矩阵

IF 32.3 1区 物理与天体物理 Q1 OPTICS
Paul Balondrade, Victor Barolle, Nicolas Guigui, Emeric Auriant, Nathan Rougier, Claude Boccara, Mathias Fink, Alexandre Aubry
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引用次数: 0

摘要

无标记显微镜利用光散射获得生物组织的三维图像。然而,光的传播会受到像差和多重散射的影响,从而大大降低图像质量并限制穿透深度。目前已开发出多共轭自适应光学和时间门控矩阵方法来补偿像差,但对于三维成像来说,相关的帧速率极其有限。在此,我们开发了一种多光谱矩阵方法来解决这些基本问题。在稀疏照明方案和多波长反射波场干涉测量的基础上,通过独立处理反射矩阵的每个频率分量,可以在后处理中优化任何体素的聚焦过程。概念验证实验显示,在 290 纳米分辨率和 1 Hz 帧速率下,在 0.1 立方毫米的视场内生成了不透明人体角膜的三维图像。这项工作为实现实时、活体、定量和深入检查组织的全数字显微镜铺平了道路。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Multi-spectral reflection matrix for ultrafast 3D label-free microscopy

Multi-spectral reflection matrix for ultrafast 3D label-free microscopy

Multi-spectral reflection matrix for ultrafast 3D label-free microscopy
Label-free microscopy exploits light scattering to obtain a three-dimensional image of biological tissues. However, light propagation is affected by aberrations and multiple scattering, which drastically degrade the image quality and limit the penetration depth. Multi-conjugate adaptive optics and time-gated matrix approaches have been developed to compensate for aberrations but the associated frame rate is extremely limited for three-dimensional imaging. Here we develop a multi-spectral matrix approach to solve these fundamental problems. On the basis of a sparse illumination scheme and an interferometric measurement of the reflected wave field at multiple wavelengths, the focusing process can be optimized in post-processing for any voxel by addressing independently each frequency component of the reflection matrix. A proof-of-concept experiment shows a three-dimensional image of an opaque human cornea over a 0.1 mm3 field of view at a 290 nm resolution and a 1 Hz frame rate. This work paves the way towards a fully digital microscope allowing real-time, in vivo, quantitative and deep inspection of tissues. Based on the acquisition of a multi-spectral reflection matrix at a high frame rate, a fully digital microscope overcomes aberrations and multiple scattering to provide a three-dimensional image of an ex vivo opaque cornea at a resolution of 0.29 μm and 0.5 μm in the transverse and axial directions, respectively.
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来源期刊
Nature Photonics
Nature Photonics 物理-光学
CiteScore
54.20
自引率
1.70%
发文量
158
审稿时长
12 months
期刊介绍: Nature Photonics is a monthly journal dedicated to the scientific study and application of light, known as Photonics. It publishes top-quality, peer-reviewed research across all areas of light generation, manipulation, and detection. The journal encompasses research into the fundamental properties of light and its interactions with matter, as well as the latest developments in optoelectronic devices and emerging photonics applications. Topics covered include lasers, LEDs, imaging, detectors, optoelectronic devices, quantum optics, biophotonics, optical data storage, spectroscopy, fiber optics, solar energy, displays, terahertz technology, nonlinear optics, plasmonics, nanophotonics, and X-rays. In addition to research papers and review articles summarizing scientific findings in optoelectronics, Nature Photonics also features News and Views pieces and research highlights. It uniquely includes articles on the business aspects of the industry, such as technology commercialization and market analysis, offering a comprehensive perspective on the field.
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