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用于原位拉曼光谱的微透镜空芯光纤探头

Microlens Hollow-Core Fiber Probes for Operando Raman Spectroscopy.

作者信息

Groom Megan J, Miele Ermanno, Pinnell Jonathan, Ellis Matthew G, McConnell Jessica B, Sakr Hesham, Jasion Gregory, Davidson Ian, Wheeler Natalie, Jung Yongmin, Poletti Francesco, Menkin Svetlana, Kamp Marlous, Baumberg Jeremy J, Euser Tijmen G

机构信息

Nanophotonics Centre, Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, U.K.

The Faraday Institution, Quad One, Harwell Science and Innovation Campus, Didcot, Oxford OX11 0RA, U.K.

出版信息

ACS Photonics. 2024 Jul 22;11(8):3167-3177. doi: 10.1021/acsphotonics.4c00525. eCollection 2024 Aug 21.

DOI:10.1021/acsphotonics.4c00525
PMID:39184181
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11342360/
Abstract

We introduce a flexible microscale all-fiber-optic Raman probe which can be embedded into devices to enable operando in situ spectroscopy. The facile-constructed probe is composed of a nested antiresonant nodeless hollow-core fiber combined with an integrated high refractive index barium titanate microlens. Pump laser 785 nm excitation and near-infrared collection are independently characterized, demonstrating an excitation spot of full-width-half-maximum 1.1 μm. Since this is much smaller than the effective collection area, it has the greatest influence on the collected Raman scattering. Our characterization scheme provides a suitable protocol for testing the efficacy of these fiber probes using various combinations of fiber types and microspheres. Raman measurements on a surface-enhanced Raman spectroscopy sample and a copper battery electrode demonstrate the viability of the fiber probe as an alternative to bulk optic Raman microscopes, giving comparable collection to a 10 objective, thus paving the way for operando Raman studies in applications such as lithium battery monitoring.

摘要

我们介绍了一种灵活的微型全光纤拉曼探针，它可以嵌入设备中以实现原位光谱操作。这种易于构建的探针由嵌套的无谐振无节点空心光纤与集成的高折射率钛酸钡微透镜组成。对785 nm泵浦激光激发和近红外收集进行了独立表征，显示出半高宽为1.1μm的激发光斑。由于这比有效收集面积小得多，因此对收集到的拉曼散射影响最大。我们的表征方案提供了一个合适的协议，用于使用各种光纤类型和微球的组合来测试这些光纤探针的功效。在表面增强拉曼光谱样品和铜电池电极上进行的拉曼测量证明了该光纤探针作为体光学拉曼显微镜替代品的可行性，其收集效果与10倍物镜相当，从而为锂电池监测等应用中的原位拉曼研究铺平了道路。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e826/11342360/d0b2d6674984/ph4c00525_0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e826/11342360/d6a3e669b0af/ph4c00525_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e826/11342360/0fb10d57e393/ph4c00525_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e826/11342360/63f9f1c9313f/ph4c00525_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e826/11342360/0cfd2f3b6105/ph4c00525_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e826/11342360/2100c2d90961/ph4c00525_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e826/11342360/f934a494c5de/ph4c00525_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e826/11342360/41cf5d85e7e8/ph4c00525_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e826/11342360/d0b2d6674984/ph4c00525_0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e826/11342360/d6a3e669b0af/ph4c00525_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e826/11342360/0fb10d57e393/ph4c00525_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e826/11342360/63f9f1c9313f/ph4c00525_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e826/11342360/0cfd2f3b6105/ph4c00525_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e826/11342360/2100c2d90961/ph4c00525_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e826/11342360/f934a494c5de/ph4c00525_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e826/11342360/41cf5d85e7e8/ph4c00525_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e826/11342360/d0b2d6674984/ph4c00525_0008.jpg

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Optical sensors for operando stress monitoring in lithium-based batteries containing solid-state or liquid electrolytes.
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Micro-Lensed Negative-Curvature Fibre Probe for Raman Spectroscopy.微透镜负曲率光纤探头用于拉曼光谱学。
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Raman Spectroscopy and Imaging in Bioanalytics.生物分析中的拉曼光谱与成像
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