DOI

In this work diffraction of light and x-rays (XRD) on opal-like structures (OLS) is considered. New methodological approaches to collection, processing and interpretation of experimental data are presented. The microradian XRD reveals the type and degree of imperfection of opal-like structures. It was shown that the OLS ordered in the twinned face centered cubic (FCC) structures with the lattice constant of 835 ± 10 nm but also with clear tendency to the random hexagonal close-packed (RHCP) structure along the [111] axis. A novel representation of the light diffraction data in the "incident angle-scattered angle" coordinates θ, Θ allows one to easily distinguish the reflections originating from 2D diffraction from the ones governed by 3D Bragg diffraction. Structural disorder becomes apparent in the θ, θ representation, as well. In addition, it was demonstrated that the immersion spectroscopy method can be used to selectively switch diffraction reflections. This phenomenon is caused by optical inhomogeneity of the SiO2 particles that form opal-like crystals.

Язык оригиналаанглийский
Название основной публикации2011 Int. Quantum Electr. Conf., IQEC 2011 Conf Lasers Electro-Optics, CLEO Pacific Rim 2011 Incorporating Australasian Conf. on Optics, Lasers Spectrosc. Australian Conf. Optical Fibre Technol.- Conf
Страницы2122-2124
Число страниц3
DOI
СостояниеОпубликовано - 1 дек 2011
СобытиеInternational Quantum Electronics Conference/ Conference on Lasers and Electro-Optics Pacific Rim - Sydney, Австралия
Продолжительность: 28 авг 20111 сен 2011
https://istina.msu.ru/collections/3419996/

конференция

конференцияInternational Quantum Electronics Conference/ Conference on Lasers and Electro-Optics Pacific Rim
Сокращенное названиеIQEC 2011/CLEO Pacific Rim 2011
Страна/TерриторияАвстралия
ГородSydney
Период28/08/111/09/11
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  • Электротехника и электроника

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