轴棱锥
材料科学
等离子体子
贝塞尔光束
光学
超材料
贝塞尔函数
梁(结构)
光电子学
等离子透镜
表面等离子体子
纳米技术
表面等离子体激元
激光束
物理
激光器
作者
Yulong Fan,Benoît Cluzel,Marlène Petit,Xavier Le Roux,Anatole Lupu,André de Lustrac
标识
DOI:10.1021/acsami.0c03420
摘要
Near-field imaging of the propagation of a diffraction-free Bessel-type beam in a guided wave configuration generated by means of a metasurface-based axicon lens integrated on a silicon waveguide is reported. The operation of the axicon lens with a footprint as small as 11 μm2 is based on local engineering of the effective index of the silicon waveguide with plasmonic nanoresonators. This generic approach, which can be adapted to different types of planar lightwave circuit platforms, offers the possibility to design nano-engineered optical devices based on the use of plasmonic resonators to control light at the nanoscale.
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