Three vertically etched (grooved) silicon structures with lattice constants of 16, 8 and 4 µm were prepared and tested as 1D photonic crystals for applications in the infrared range of the electromagnetic spectrum. These structures with high contrast in the refractive index (n Si /n air = 3.42/1) not only possess a wide main band gap for the photons, but these have also reasonably wide side stop bands at lower wavelengths. The IR reflectance spectra for such structures simulated using the method of characteristic matrix showed a good agreement with the experimental data.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.