title: Small volume excitation and enhancement of dye fluorescence on a 2D photonic crystal surface.
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.
authors.affiliation: Quantum Electronics Lab, Dpto. de Física. FCEN, Universidad de Buenos Aires, 1428, Buenos Aires, Argentina.
authors.forename: L C
authors.initials: LC
authors.lastname: Estrada
authors.forename: O E
authors.initials: OE
authors.lastname: Martinez
authors.forename: M
authors.initials: M
authors.lastname: Brunstein
authors.forename: S
authors.initials: S
authors.lastname: Bouchoule
authors.forename: L
authors.initials: L
authors.lastname: Le-Gratiet
authors.forename: A
authors.initials: A
authors.lastname: Talneau
authors.forename: I
authors.initials: I
authors.lastname: Sagnes
authors.forename: P
authors.initials: P
authors.lastname: Monnier
authors.forename: J A
authors.initials: JA
authors.lastname: Levenson
authors.forename: A M
authors.initials: AM
authors.lastname: Yacomotti
mesh_terms: D003287:Contrast Media / Q000032:analysis / Q000737:chemistry*; D003460:Crystallization / Q000379:methods*; D005456:Fluorescent Dyes / Q000032:analysis / Q000737:chemistry*; D007089:Image Enhancement / Q000379:methods*; D008856:Microscopy, Fluorescence / Q000379:methods*; D013499:Surface Properties
chemical_list: D003287:Contrast Media; D005456:Fluorescent Dyes