Refractive index and absorption of lead bromide crystals

被引：14

作者：

Ren, Q ^{[1
]}

Liu, LQ

Wang, ZG

An, XS

Zhang, GH

Xu, D

机构：

[1] Shandong Univ, Dept Opt, Jinan 250100, Peoples R China

[2] Qingdao Hightech Photoelect Co Ltd, Qingdao 266555, Peoples R China

[3] Shandong Univ, Natl Key Lab Crystal Mat, Jinan 250100, Peoples R China

来源：

MATERIALS RESEARCH BULLETIN | 2000年 / 35卷 / 03期

关键词：

optical materials; crystal growth; optical properties;

D O I：

10.1016/S0025-5408(00)00229-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Lead bromide (PbBr2) crystals in [001] orientation were obtained by the Bridgman growth method. The orientation of the principal refractive axes of the crystals was determined, and their principal refractive indices were measured by the least deviation angle at eight selected wavelengths. The optical axial angle and the dispersion of refractive index in the visible spectral range were calculated by Sellmeier's formula. Optical transmission and reflection spectra were measured and the absorption coefficient alpha was determined. Using the calculated alpha(hv) dependence, the bandgap width corresponding to indirect transition was determined. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：471 / 476

页数：6

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