Fluorescence enhancement from an array of subwavelength metal apertures.

We report the resonant excitation of a fluorescing molecular monolayer applied to a periodic array of subwavelength apertures in a metal film. The peak fluorescence occurs under conditions of maximum transmission of the excitation light, which indicates strong enhancement of the incident light within the apertures under resonant conditions. Fluorescence output normalized to the aperture fill fraction is enhanced by nearly 40 times, and the rate of photobleaching is increased by approximately a factor of 2, suggesting an increase in the fluorescence yield.

[1]  Daniel Kleppner,et al.  Inhibited Spontaneous Emission , 1981 .

[2]  S. Blair,et al.  Resonant-enhanced evanescent-wave fluorescence biosensing with cylindrical optical cavities. , 2001, Applied optics.

[3]  Y. Zhao,et al.  Surface-plasmon-assisted resonant tunneling of light through a periodically corrugated thin metal film. , 2000, Optics letters.

[4]  Vladimir M. Shalaev,et al.  Resonance transmittance through a metal film with subwavelength holes , 2002 .

[5]  H. Lezec,et al.  Extraordinary optical transmission through sub-wavelength hole arrays , 1998, Nature.

[6]  Thomas W. Ebbesen,et al.  Surface plasmons enhance optical transmission through subwavelength holes , 1998 .

[7]  Thomas W. Ebbesen,et al.  Surface-plasmon-enhanced transmission through hole arrays in Cr films , 1999 .

[8]  R. Wannemacher.  Plasmon-supported transmission of light through nanometric holes in metallic thin films , 2001 .

[9]  J. Pendry,et al.  Theory of extraordinary optical transmission through subwavelength hole arrays. , 2000, Physical review letters.

[10]  J. Michael Ramsey,et al.  Enhanced fluorescence yields through cavity quantum-electrodynamic effects in microdroplets , 1994 .

[11]  J. Pendry,et al.  Evanescently coupled resonance in surface plasmon enhanced transmission , 2001 .

[12]  A. Zayats,et al.  Near-field distribution of optical transmission of periodic subwavelength holes in a metal film. , 2001, Physical review letters.

[13]  H. Lezec,et al.  Control of optical transmission through metals perforated with subwavelength hole arrays. , 1999, Optics letters.

[14]  Thomas W. Ebbesen,et al.  Fornel, Frédérique de , 2001 .