Spectroscopic Evidence of Bloch Surface Waves in the Mid Infrared
04 Pubblicazione in atti di convegno
Ortolani M., Pea M., Occhicone A., Giliberti V., Sinibaldi A., Mattioli F., Cibella S., Polito R., Nucara A., Baldassarre L., Michelotti F.
ISSN: 2162-2027
Bloch Surface Waves are surface electromagnetic waves with very low intrinsic losses, existing in both in-plane and out-of plane polarizations, supported by a one-dimensional photonic crystal with an in-gap defect. We have developed thin-film deposition technology on CaF2 prisms suitable for biosensing applications of BSWs in the mid-infrared. Here we report spectroscopic evidence of BSWs, in perfect agreement with theory, in the wavelength range from 4 to 6 micrometers.