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Opt Express. 2010 Feb 15;18(4):3693-9. doi: 10.1364/OE.18.003693.

Small volume excitation and enhancement of dye fluorescence on a 2D photonic crystal surface.

Author information

1
Quantum Electronics Lab, Dpto. de FĂ­sica. FCEN, Universidad de Buenos Aires, 1428, Buenos Aires, Argentina.

Abstract

We demonstrate an easy-to-implement scheme for fluorescence enhancement and observation volume reduction using photonic crystals (PhCs) as substrates for microscopy. By normal incidence coupling to slow 2D-PhC guided modes, a 65 fold enhancement in the excitation is achieved in the near field region (100 nm deep and 1 microm wide) of the resonant mode. Such large enhancement together with the high spatial resolution makes this device an excellent substrate for fluorescence microscopies.

PMID:
20389379
DOI:
10.1364/OE.18.003693
[Indexed for MEDLINE]

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