Ellipsometric studies of opal crystals

Medientyp: E-Artikel
Titel: Ellipsometric studies of opal crystals
Beteiligte: Reza, A.; Tamasevicius, R.; Babonas, J.; Balevicius, Z.; Vaicikauskas, V.; Golubev, V.; Kurdyukov, D.
Erschienen: Wiley, 2008
Erschienen in: physica status solidi c
Sprache: Englisch
DOI: 10.1002/pssc.200777739
ISSN: 1862-6351; 1610-1642
Schlagwörter: Condensed Matter Physics
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Beschreibung: <jats:title>Abstract</jats:title><jats:p>Spectroscopic ellipsometry investigations have been performed on synthetic opal crystals containing SiO<jats:sub>2</jats:sub> spheres having a diameter of <jats:italic>D</jats:italic> ∼250 nm. The optical features in the spectra of ellipsometric parameters Ψ and Δ were observed in the region of stop band (500‐550 nm). The ellipsometric spectra were separated due to diffraction and specular reflection. The data were interpreted by using effective homogeneous and stacked multi‐layer media models. The average index of refraction of the opal photonic crystal was estimated in the first model and the angle‐resolved spectra were qualitatively described by the second model. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)</jats:p>

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