Bloch surface waves-controlled emission of organic dyes grafted on a one-dimensional photonic crystal

An alternative route to plasmon-controlled fluorescence for improving the detection of fluorescence is proposed. In place of a metallic layer, a suitable silicon-based one-dimensional photonic crystal is used to generate a Bloch surface waves-coupled emission from a thin polymeric layer decorated with a fluorescent dye. Fluorescent radiation coupled to Bloch surface waves is strongly polarized and directional, with an angular divergence of 0.3 corresponding to a spectral bandwidth of 3 nm. Within this range, an overall signal enhancement of a factor larger than 500 is obtained as compared to a conventional glass substrate thanks to an additional enhancement mechanism based on dyes excitation via Bloch surface waves


Published in:
Applied Physics Letters, 99, 4, 043302
Year:
2011
Publisher:
American Institute of Physics
ISSN:
0003-6951
Keywords:
Laboratories:




 Record created 2011-10-24, last modified 2018-09-13

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