期刊
ACS APPLIED MATERIALS & INTERFACES
卷 12, 期 18, 页码 21114-21119出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c03420
关键词
axicon; Bessel beams; optical metasurfaces; surface plasmon resonances; silicon photonics
资金
- EIPHI Graduate School [ANR-17-EUR-0002]
- FEDER Program
- Conseil Regional de Bourgogne Franche-Comte
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 mu m(2) 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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