Photonic band effects in three dimensional lattices of macroscopic-sized dielectric spheres derived from microwave transmission spectroscopy

Autor:	J. Sevilla, P. Morales, M. Sáenz, Angel Andueza, R. Echeverría
Rok vydání:	2008
Předmět:	Materials science business.industry Layer by layer Metamaterial Bragg's law Dielectric Molecular physics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Optics SPHERES Electrical and Electronic Engineering business Spectroscopy Microwave Photonic crystal
Zdroj:	Optical and Quantum Electronics. 40:1043-1051
ISSN:	1572-817X 0306-8919
DOI:	10.1007/s11082-009-9300-7
Popis:	Several structures of dielectric spheres (glass) have been arranged and the electromagnetic absorption properties of the resulting materials have been measured in the microwave domain. In all cases strong rejected bands are present while keeping nearly transparent for other frequencies. The physical origin of the observed bands is studied by recording the spectra of the materials as they are grown layer by layer. These data show the appearance of a peak attributed to Bragg scattering generated by the spheres layers. Besides, higher order bands are developed over the resonances that are found even in the single layer of spheres. These are caused by a complex interaction of isolated sphere Mie modes and Bragg scattering in planes perpendicular (or nearly) to the incident radiation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fd309c7a9c7383e9048cc434f98021f8 https://doi.org/10.1007/s11082-009-9300-7 Zobrazit plný text záznamu Plný text ve formátu PDF