Plasmonic micropipe spectral filters in mid-infrared.
Opt Lett
; 44(18): 4479-4482, 2019 Sep 15.
Article
em En
| MEDLINE
| ID: mdl-31517911
ABSTRACT
Multispectral analyzers based on nanostructured plasmonic spectral filters can potentially find a wide range of applications. However, spectral filters based on the widely reported microhole or ring arrays suffer from relatively wide filtering bands, resulting in a relatively low spectral resolution. In this work, we fabricate high-performance spectral filters based on vertically standing micropipes on a silver film. An infrared spectral microscope is used to investigate the properties of these micropipe spectral filters. The results indicate that the micropipe spectral filters have a full width at half-maximum â¼5 times smaller than the microhole filters at the same wavelength. Micropipe spectral filters are expected to significantly improve the spectral resolution of multispectral analyzers.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Opt Lett
Ano de publicação:
2019
Tipo de documento:
Article