Plasmonic lens for ultraviolet wavelength

Plasmonic lens for ultraviolet wavelength

A plasmonic lens (PL) is one of the promising photonic devices utilizing the surface plasmon wave. In this study, we have newly developed a PL with a 3.5 µm diameter for a wavelength of 375 nm (ultraviolet region). It is composed of multiple circular slit apertures milled in aluminum (Al) thin film....

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Japanese Journal of Applied Physics 2016-09, Vol.55 (9S), p.9-09SD03
Hauptverfasser: Takeda, Minoru, Tanimoto, Takuya, Inoue, Tsutomu, Aizawa, Kento
Format: Artikel
Sprache:eng
Schlagworte:
Aluminum
Devices
Electric fields
Focusing
Lenses
Plasmonics
Ultraviolet
Wavelengths
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:A plasmonic lens (PL) is one of the promising photonic devices utilizing the surface plasmon wave. In this study, we have newly developed a PL with a 3.5 µm diameter for a wavelength of 375 nm (ultraviolet region). It is composed of multiple circular slit apertures milled in aluminum (Al) thin film. We have simulated the electric field distribution of the PL, and confirmed that a tightly focused beam spot of subwavelength size in the far-field region was attained. We have also measured the focusing characteristics of the PL using a near-field scanning optical microscope (NSOM) and compared them with the calculated results.
ISSN:0021-4922
1347-4065
DOI:10.7567/JJAP.55.09SD03