We demonstrate new simple methods of all-laser fabrication of nanoantenna (nano-jet) with an additional elements for coupling/focusing of surface plasmon-polaritons (SPPs). The first method is realized by using an aluminum (Al) plasmonic lens irradiated by a linearly polarized femtosecond laser pulse at fluences higher than the ablation threshold of aluminum. The resulting plasmonic lenses contain single nanojets in their centers owing to focusing of intense surface plasmon-polaritons and melt expulsion in the locally heated area. Such surface structure resembles a parabolic antenna, which has a receiver and focusing reflector. The second method is based on double-shot femtosecond laser nanoablation of thin supported metallic (Au) film. The first fs-laser pulse produces nanojet, standing on bump of microscale diameter. Irradiation by spatially shifted (on several microns) second laser pulse results in the bump removing, transition of nanojet into nanosphere and formation of concentric periodical semi-rings. Resulted surface structure represents nanoantenna (gold nanospere), surrounded by plasmonic lens, delivering more incident energy to the nanoantenna.
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