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首页> 外文会议>Single molecule spectroscopy and superresolution imaging VII >SERS fiber probe fabricated by femtosecond laser with lateral surface silver coating on micro-fiber tips
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SERS fiber probe fabricated by femtosecond laser with lateral surface silver coating on micro-fiber tips

机译：飞秒激光制造的SERS光纤探针，在微纤维尖端上具有侧面银涂层

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摘要

We report a method to fabricate SERS fiber probe by femtosecond laser micromachining on a microfiber tip. Multimode optical fibers are tapered to outer diameter of 4 to 20 μm. Femtosecond laser pulses are used to form nanostructures on the cleaved endface of the microfiber tip. This endface is then activated by silver sputter coating. To confine the excitation and reflection signal within the tapered core of the microfiber tip, the probe is side-coated with silver plating. High quality SERS signal of Rhodamine 6G molecules is detected through back excitation and collection from a lead in fiber of up to several meters long. The small size of the SERS micro-probe is promising for intra-cellular or even single cell detection, while the back excitation and collection setup make it suitable for remote sensing applications.
机译：我们报告了一种在微纤维尖端上通过飞秒激光微加工制造SERS纤维探针的方法。多模光纤逐渐变细，外径为4至20μm。飞秒激光脉冲用于在超细纤维尖端的开裂端面上形成纳米结构。然后通过镀银涂层激活该端面。为了将激发和反射信号限制在超细纤维尖端的锥形芯内，探头的侧面镀银。罗丹明6G分子的高质量SERS信号是通过反激和从长达几米长的光纤中的铅中收集而检测到的。 SERS微探针的小尺寸有望用于细胞内甚至单细胞检测，而反向激发和采集设置使其适合于遥感应用。

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