Light-Matter Interaction in Hybrid Colloida Photonic Crystals

Within this thesis several optical properties of different types of compicate structure of hybrid crystal were studied.

Extraordinary optical transmission (EOT) was observed in the sturctures with corrugated silver films mostly due to the coupling of surface plasmon polaritons from both side of the film which resemble the enhanced transmission spectra of sub-wavelenght periodic array of perforations in flat metal film. The location of these EOTs in the transmission and reflection spectra was proven to be function of lattice constant that replicates the periodicity of 2D heagonal lattice of silica spheres on which the silver film is deposited.

Another feature that was observed it the splitting of the EOT peak in case of double and triple metal film. This corresponds to interaction of evanescent SPPs of different metal films. In case of two silver film the peak splits into two and in triple case into three.

The reasonance mechanisms distinguished in this work are the tools for tailoring the optical properties of photonic crystals. These resonances can be tunend individually by changig the geometry of the structures such as changing the lattice periodicity or differing the order of layers of metal and dielectric. Future development of such crystals can be seen in designing more complex heterogeneous archtitectures like hybrid crystals with a corrugated metal layer inside the 3D opal film as well as using more high ordered metal particle besides corrugated metal film in the hybrid structure in order to strengthen the localized plasmonic effects.

Because of all mentioned properties and exclusive optical properties of fabricated nanostructured sample accompanied by surface plasmon polaritons this type of hybrid photonic-plasmonic crystal can be and in some field already are exploited in application ranging from low threshold lasers to surface plasmon resonance bio-sensors and light tarpping among many other applications.