Interfacing photonic crystal fiber with a metallic nanoantenna for enhanced light nanofocusing
Interfacing photonic crystal fiber with a metallic nanoantenna for enhanced light nanofocusing
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DOI：
10.1364/prj.411583
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发表时间：
2021-02-01
影响因子：
7.6
通讯作者：
Zhang, Zhenrong
中科院分区：
文献类型：
--
作者：
Minn, Khant;Birmingham, Blake;Zhang, Zhenrong
光子晶体光纤与金属纳米天线的直接连接在纳米成像、光学光刻、纳米激光、量子通信、体内传感和医疗外科等领域有着广泛的应用。本文报道了利用铂的电子束诱导蒸发在光子晶体光纤的端面上制备针状等离子体纳米天线。我们使用偏振分辨远场侧散射成像技术演示了光纤波导模式与亚波长纳米天线等离子体模式的耦合，该模式聚焦到等离子体针尖。我们的工作为光纤在近场光谱技术中的广泛应用提供了重要的一步，如尖端增强拉曼和荧光显微镜、单光子激发和量子传感器、纳米级光刻和光纤实验室设备。(C) 2021中国激光出版社
The direct interfacing of photonic crystal fiber to a metallic nanoantenna has widespread application in nanoscale imaging, optical lithography, nanoscale lasers, quantum communication, in vivo sensing, and medical surgery. We report on the fabrication of a needle-shaped plasmonic nanoantenna on the end facet of a photonic crystal fiber using electron-beam-induced evaporation of platinum. We demonstrate the coupling of light from the fiber waveguide mode to the subwavelength nanoantenna plasmonic mode focusing down to the apex of the plasmonic needle using a polarization-resolved far-field side-scatter imaging technique. Our work provides an important step toward widespread application of optical fibers in nearfield spectroscopic techniques such as tip-enhanced Raman and fluorescence microscopy, single-photon excitation and quantum sensors, nanoscale optical lithography, and lab-on-fiber devices. (C) 2021 Chinese Laser Press