论文标题
多核光纤光谱光谱仪，用于拉曼光谱学
A Multi-Core Fibre Photonic Lantern Based Spectrograph for Raman Spectroscopy
论文作者
论文摘要
我们报告了紧凑型的开发（卷$ \ $ \ $ 100 \：cm $^3 $），多模衍射的拉曼光谱仪和探针旨在尽可能紧凑。该光谱仪使用“ Off the Beshelf”光学器件，一种定制的3D打印的两部分壳体，并利用多核光纤（MCF）光子灯笼（Multimode to Lick Modode Converter），将40〜\ textmu m多模型输入切成近乎近距离的6〜 \ textmu m papert。我们独特的设计利用了MCF的六边形几何形状，在紧凑的设计中允许具有近乎划分的限制性能的高多模收集效率。我们的方法不需要复杂的改革或面罩，因此在形成光谱仪的入口缝隙时可以保留光谱信息和吞吐量。我们演示了在800〜nm至940〜nm（200〜cm $^{ - 1} $至2000〜cm $^{ - 1} $的技术中，分辨率为0.3 \：NM（4 \：CM $^{ - 1} $），但其他群体和分辨率也可能与附近的UV相近。我们通过录制几种化合物的拉曼光谱，包括药物扑热息痛和布洛芬，证明了系统的性能。
We report on the development of a compact (volume $\approx$ 100\:cm$^3$), multimode diffraction-limited Raman spectrograph and probe designed to be compact as possible. The spectrograph uses `off the shelf' optics, a custom 3D-printed two-part housing and harnesses a multi-core fibre (MCF) photonic lantern (multimode to few-mode converter), which slices a large 40~\textmu m multimode input into a near-diffraction-limited 6~\textmu m aperture. Our unique design utilises the hexagonal geometry of our MCF, permitting high multimode collection efficiency with near-diffraction-limited performance in a compact design. Our approach does not require a complex reformatter or mask and thus preserves spectral information and throughput when forming the entrance slit of the spectrograph. We demonstrate the technology over the interval 800~nm to 940~nm (200~cm$^{-1}$ to 2000~cm$^{-1}$) with a resolution of 0.3\:nm (4\:cm$^{-1}$), but other spectral regions and resolutions from the UV to the near infrared are also possible. We demonstrate the performance of our system by recording the Raman spectra of several compounds, including the pharmaceuticals paracetamol and ibuprofen.
