Optical characterization of natural and synthetic opals by Bragg reflection spectroscopy

被引：10
|
作者：
Kavtreva, O. A. [1 ]
Ankudinov, A. V. [1 ]
Bazhenova, A. G. [1 ]
Kumzerov, Yu. A. [1 ]
Limonov, M. F. [1 ]
Samusev, K. B. [1 ]
Sel'kin, A. V. [1 ]
机构：
[1] Russian Acad Sci, AF Ioffe Physicotech Inst, St Petersburg 194021, Russia
来源：
PHYSICS OF THE SOLID STATE | 2007年 / 49卷 / 04期
基金：
俄罗斯基础研究基金会;
关键词：
D O I：
10.1134/S106378340704018X
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The Bragg reflection of light from natural and synthetic opals was studied experimentally, and the samples were characterized by atomic-force microscopy. The reflection spectra were theoretically calculated within the model of a planar, periodically layered medium. A comparison of the experimental and calculated data made it possible to determine the parameters of the crystal structure of synthetic opals (lattice constants and sintering coefficients of a-SiO2 particles). It was concluded that the pores in the structure of natural opals are filled by a material with a refractive index close to that of a-SiO2.
引用
收藏
页码：708 / 714
页数：7
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