Optics of an opal modeled with a stratified effective index and the effect of the interface
arXiv:1507.08548 · doi:10.1364/JOSAB.32.001761
Abstract
Reflection and transmission for an artificial opal are described through a model of stratified medium based upon a one-dimensional variation of an effective index. The model is notably applicable to a Langmuir-Blodgett type disordered opal. Light scattering is accounted for by a phenomenological absorption. The interface region between the opal and the substrate -or the vacuum- induces a periodicity break in the photonic crystal arrangement, which exhibits a prominent influence on the reflection, notably away from the Bragg reflection peak. Experimental results are compared to our model. The model is extendable to inverse opals, stacked cylinders, or irradiation by evanescent waves
arXiv admin note: substantial text overlap with arXiv:1407.5777
References in corpus (4)
- Directed sub-wavelength imaging using a layered metal-dielectric system
- Three dimensional confinement of vapor in nanostructures for sub-Doppler optical resolution
- Infiltrating a thin or single layer opal with an atomic vapour: sub-doppler signals and crystal optics
- A 2D nanosphere array for atomic spectroscopy