Abstract

A plasmon state that could be excited at the boundary of photonic crystal and metal is recently theoretically estimated [1] and experimentally testified [2]. The propagation constant dispersion of TP lies within the light corn. Consequently, no coupling system is required to excite the plasmon mode. Due to the characteristic of Tamm plasmon, optical sensors based on TP have been studied for chemical, biomedical, environmental monitoring lately. The ordinary Tamm plasmon structure is constituted by dielectric layers with high and low refractive index alternately to form the dielectric Bragg reflector (DBR) and with a sharp optical response within the photonic bandgap of DBR. The electric field of TP is enhanced at Au-DBR interface and decay to DBR and metals.

© 2016 Japan Society of Applied Physics, Optical Society of America