Answers are grounded in this paper and cite their sources.
We have studied Bragg reflection spectra of photonic crystals based on synthetic opals. The samples under study represented opal-semiconductor composites, in which the opal pores were filled with GaN and GaP, and GaN-inverted structures with the opal matrix removed from the composite. Bragg reflection spectroscopy is found to possess new capabilities for characterization of opal-like structures. A theoretical approach to the reflectance spectrum analysis has been developed on the assumption of a planar spatially periodic medium, accounting for the effects of sintering of SiO₂ opal spheres and their uniaxial strain. For an additional characterization of the samples, we considered a structural invariant relating to each other the photonic crystal lattice parameters and the spectral positions of features in multiple Bragg diffraction spectra.
No takes yet. Share an insight, caveat, or question.
Gajiev et al. (2005) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: