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Fluorescence diffraction assisted by Bloch surface waves on a one-dimensional photonic crystal

 
: Angelini, Angelo; Enrico, Emanuele; Leo, Natascia de; Munzert, Peter; Boarino, Luca; Michelotti, Francesco; Giorgis, Fabrizio; Descrovi, Emiliano

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Postprint (PDF; )

New journal of physics. Online journal 15 (2013), Nr.7, Art. 073002, 13 S.
http://www.iop.org/EJ/journal/1367-2630
ISSN: 1367-2630
Englisch
Zeitschriftenaufsatz, Elektronische Publikation
Fraunhofer IOF ()
Experimental evidence; Locally excited; one dimensional photonic crystal; organic dye; subwavelength grating; visible range

Abstract
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.

: http://publica.fraunhofer.de/dokumente/N-259797.html