[16a-P08-1~12] 3.12 Nanoscale optical science and near-field optics

[16a-P08-7] Control of fluorescence enhancement factor by the shift of resonance wavelength on a plasmonic chip

〇Takeha Shinohara¹, Hinako Chida¹, Tomoya Nagasue¹, Keiko Tawa¹ (1.Kwansei Gakuin Univ.)

Keywords:Plasmon, resonance wavelength, fluorescence microscope

In our laboratory, the enhanced fluorescence based on the grating-coupled surface plasmon resonance has been observed with a plasmonic chip in which a wavelength-sized periodic pattern is coated with a thin metal film. Recently, in fluorescence images observed with a fluorescence microscope under the transmitted light, significant fluorescence enhancement has been observed at the center of the Bull's eye pattern. In this study, a resonance wavelength shifted by increment of SiO₂ layer thickness on a plasmonic chip was found to improve the fluorescence enhancement.