Interfacing photonic crystal fiber with a metallic nanoantenna for enhanced light nanofocusing

作     者：KHANT MINN BLAKE BIRMINGHAM BRIAN KO HO WAI HOWARD LEE ZHENRONG ZHANG 

作者机构：Department of PhysicsBaylor UniversityWacoTexas 76798USA The Institute for Quantum Science and EngineeringTexas A&M UniversityCollege StationTexas 77843USA Department of Physics&AstronomyUniversity of CaliforniaIrvineCalifornia 92697USA Beckman Laser Institute and Medical ClinicUniversity of CaliforniaIrvineCalifornia 92697USA 

出 版 物：《Photonics Research》 (光子学研究（英文版）)

年 卷 期：2021年第9卷第2期

页      面：252-258页

核心收录：

学科分类：080904[工学-电磁场与微波技术] 0808[工学-电气工程] 070207[理学-光学] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：National Science Foundation(CHE-1905043 PFI-1941100) 

主　　题：antenna fiber lithography 

摘      要：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 *** 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.