The use of linear and circular subwavelength gratings for improving the fluorescence extraction from organic dyes spotted on the surface of a one-dimensional photonic crystal is demonstrated. The one-dimensional photonic crystal hosting the gratings allows Bloch surface waves (BSWs) to be coupled in the visible range. We provide experimental evidence for the distributed diffraction of BSW-coupled fluorescence that is locally excited using a microscope-based setup. By diffracting the BSW-coupled fluorescence, a significant improvement in the total fluorescence collection is obtained as compared to a flat one-dimensional photonic crystal.
Fluorescence diffraction assisted by Bloch surface waves on a one-dimensional photonic crystal / A Angelini; E Enrico; N De Leo; P Munzert; L Boarino; F Michelotti; F Giorgis; E Descrovi. - In: NEW JOURNAL OF PHYSICS. - ISSN 1367-2630. - STAMPA. - 15(2013), p. 073002.
|Titolo:||Fluorescence diffraction assisted by Bloch surface waves on a one-dimensional photonic crystal|
|Data di pubblicazione:||2013|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1088/1367-2630/15/7/073002|
|Appare nelle tipologie:||1.1 Articolo in rivista|
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