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14 December 2010 Plasmonic nanolenses made of noble metals focusing into far-field
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Proceedings Volume 7746, 17th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics; 77461B (2010) https://doi.org/10.1117/12.883838
Event: 17th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 2010, Liptovsky Jan, Slovakia
Abstract
Recently, 3D silver nanolenses with concentric slits with an on-axis stop and with concentric corrugations on both surfaces and no hole on the optical axis were proposed. The nanolenses illuminated with a radially polarized visible range Laguerre-Gauss beam focus light into subwavelength spots and act as high numerical aperture refractive optical systems. Focal lengths range from one to a few wavelengths. Due to constructive interference of far-field radiation of SPPs generated on the back side the lens focuses without contribution of the evanescent field. In this technical note we investigate transmission and focusing properties of lenses of both kinds made of different metals: silver, gold, copper, and aluminum.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
P. Wróbel, T. J. Antosiewicz, and T. Szoplik "Plasmonic nanolenses made of noble metals focusing into far-field", Proc. SPIE 7746, 17th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 77461B (14 December 2010); https://doi.org/10.1117/12.883838
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