Arrays of transparent dielectric nanorods are shown to produce very large local field enhancements at specific resonant conditions. These structures would lead to enhancement of molecular fluorescence signals without quenching. The resonant angular width and field enhancements are analytically derived as a function of wavelength, grating period, rod radius, and dielectric constant.
© 2007 Optical Society of America
Original Manuscript: June 11, 2007
Revised Manuscript: August 5, 2007
Manuscript Accepted: August 11, 2007
Published: September 14, 2007
Marine Laroche, Silvia Albaladejo, Rémi Carminati, and Juan José Sáenz, "Optical resonances in one-dimensional dielectric nanorod arrays: field-induced fluorescence enhancement," Opt. Lett. 32, 2762-2764 (2007)