We present, to the best of our knowledge, the first demonstration of mid-infrared supercontinuum (SC) tissue imaging at wavelengths beyond 5 μm using a fiber-coupled SC source spanning 2–7.5 μm. The SC was generated in a tapered large-mode-area chalcogenide photonic crystal fiber in order to obtain broad bandwidth, high average power, and single-mode output for diffraction-limited imaging performance. Tissue imaging was demonstrated in transmission at selected wavelengths between 5.7 ($1754{\mathrm{cm}}^{-1}$) and 7.3 μm ($1370{\mathrm{cm}}^{-1}$) by point scanning over a sub-millimeter region of colon tissue, and the results were compared to images obtained from a commercial instrument.

中文翻译：

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使用硫族化物纤维超连续谱源的中红外多光谱组织成像

据我们所知，我们首次展示了使用跨度为2–7.5μm的光纤耦合SC光源对波长超过5μm的中红外超连续谱（SC）组织成像的演示。为了获得宽带宽，高平均功率和用于限制衍射成像性能的单模输出，在锥形大模式面积硫族化物光子晶体光纤中生成了SC。组织成像在5.7（$\mathrm{1754年}{\mathrm{厘米}}^{-\mathrm{1个}}$）和7.3μm（$1370{\mathrm{厘米}}^{-\mathrm{1个}}$通过在结肠组织的亚毫米区域上进行点扫描，将结果与从商用仪器获得的图像进行比较。