Multiband perfect absorbers using metal-dielectric films with optically dense medium for angle and polarization insensitive operation

Jong-Bum You, Wook-Jae Lee, Dongshik Won, Kyoungsik Yu
2014 Optics Express  
The cavity resonant properties of planar metal-dielectric layered structures with optically dense dielectric media are studied with the aim of realizing omnidirectional and polarization-insensitive operation. The angledependent coupling between free-space and cavity modes are revealed to be a key leverage factor in realizing nearly perfect absorbers well-matched to a wide range of incidence angles. We establish comprehensive analyses of the relationship between the structural and optical
more » ... and optical properties by means of theoretical modeling with numerical simulation results. The presented work is expected to provide a simple and cost-effective solution for light absorption and detection applications that exploit planar metal-dielectric optical devices.
doi:10.1364/oe.22.008339 pmid:24718208 fatcat:vvbyuitp6rfzjmyf6de2y573tm