Local Field Enhancement Due to the Edge States of Nanoplasmonic Crystal

In this paper, we describe the effect of local electric field enhancement due to existence photonic edge states in a nanoplasmonic crystal. These can be excited by normal incident wave and are localized along continuous line defect, where translational symmetry is broken. The crystal formed triangular lattice SiO2 cylinders on top Ag thin films. Numerical simulations demonstrated that modes concentrated around defect nanophotonic may result 12 enhancements for plane wavelength 545 nm. This employed improving sensitivity surface-enhanced Raman scattering (SERS) spectroscopy, increasing Purcell factor quantum systems efficiency higher harmonic generation.