Angelini, AngeloAngeloAngeliniEnrico, EmanueleEmanueleEnricoLeo, Natascia deNatascia deLeoMunzert, PeterPeterMunzertBoarino, LucaLucaBoarinoMichelotti, FrancescoFrancescoMichelottiGiorgis, FabrizioFabrizioGiorgisDescrovi, EmilianoEmilianoDescrovi2022-03-042022-03-042013https://publica.fraunhofer.de/handle/publica/23326510.1088/1367-2630/15/7/073002The 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.enExperimental evidenceLocally excitedone dimensional photonic crystalorganic dyesubwavelength gratingvisible range620530journal article