Refractive index dispersion of AgCl1-xBrx (0 <= x <= 1) and Ag1-xTlxBr1-xIx (0 <= x <= 0.05) / Korsakov Alexandr S.,Vrublevsky Dmitry S.,Lvov Alexandr E.,Zhukova Liya V. // OPTICAL MATERIALS. - 2017. - V. 64, l. . - P. 40-46.

ISSN/EISSN:

0925-3467 / 1873-1252

Type:

Article

Abstract:

For polycrystalline AgCl1-xBrx (0 <= x <= 1) and Ag1-xTlxBr1-xIx (0 <= x <= 0.05) thin plates manufactured by hot embossing, we recorded the ultraviolet (UV) to near-infrared (NIR) transmission spectra in order to reveal the absorption edge and to measure the refractive index at short wavelengths. The former moves towards longer wavelengths and the latter increases significantly, when the substituting agent content in the solid solution (x) is being increased. Using mid-infrared (MIR) spectra, recorded by Fourier-transform infrared spectroscopy (MIR), we determined both real (n) and imaginary (k) parts of the refractive index at 4.5, 5.0, 8.0,12.0,14.0 mu m. These data, together with the ones collected earlier with He-Ne laser and at 10.6 mu m via FTIR, allow observing that the introduction of a heavy substituting agent into a host lattice forces the refractive index to grow gradually at a fixed wavelength and to fall considerably within each composition (vice versa for the extinction coefficient), especially in the NIR. Fresnel reflection (R) and absorption coefficients (K) were also calculated, and several error-calculation equations for n, k, K, and R were proposed concerning all contributions of each approach used. (C) 2016 Elsevier B.V. All rights reserved.

Author keywords:

Silver and thallium halides; Refractive index; Material dispersion; Mid-infrared materials SILVER-HALIDE; ENERGY-GAP; OPTICAL-PROPERTIES; SEMICONDUCTORS; CRYSTALS; FIBERS; GUIDES; MODEL

DOI:

10.1016/j.optmat.2016.11.038

Web of Science ID:

ISI:000394635200007

Соавторы в МНС:

Другие поля

Поле	Значение
Month	FEB
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
EISSN	1873-1252
Keywords-Plus	SILVER-HALIDE; ENERGY-GAP; OPTICAL-PROPERTIES; SEMICONDUCTORS; CRYSTALS; FIBERS; GUIDES; MODEL
Research-Areas	Materials Science; Optics
Web-of-Science-Categories	Materials Science, Multidisciplinary; Optics
Author-Email	l.v.zhukova@urfu.ru
Funding-Acknowledgement	Government of the Russian Federation {[}02.A03.21.0006]; Ministry of Education and Science of the Russian Federation {[}5440.2015.3]
Funding-Text	The work was supported by Act 211 of the Government of the Russian Federation, contract No 02.A03.21.0006. A.K. also acknowledges Ministry of Education and Science of the Russian Federation (Grant No 5440.2015.3). D.V. would like to thank M. Korsakov (Ural Federal University, Yekaterinburg) for provision of single crystal samples and E. Krupennikov (Krasovsky Institute of Mathematics and Mechanics, Yekaterinburg) for technical support.
Number-of-Cited-References	28
Usage-Count-Last-180-days	2
Usage-Count-Since-2013	2
Journal-ISO	Opt. Mater.
Doc-Delivery-Number	EL5AY