Optical and structural properties of Nb2O5-SiO2 mixtures in thin films

被引：12
作者：
Janicki, Vesna [1 ]
Sancho-Parramon, Jordi [1 ,2 ]
Yulin, Sergiy [3 ]
Flemming, Marcel [4 ]
Chuvilin, Andrey [4 ]
机构：
[1] Rudjer Boskovic Inst, Zagreb 10000, Croatia
[2] Univ Barcelona, Dept Fis Aplicada & Opt, E-08028 Barcelona, Spain
[3] Fraunhofer Inst Angew Opt & Feinmech IOF, D-07745 Jena, Germany
[4] Univ Ulm, D-89069 Ulm, Germany
来源：
SURFACE & COATINGS TECHNOLOGY | 2012年 / 206卷 / 17期
关键词：
Optical characterization; Optical properties; Structural properties; Material mixture; Effective medium theory; PLASMA-DEPOSITED TA2O5; NIOBIUM OXIDE; RUGATE; COATINGS; LAYERS; STABILITY; SILICA;
D O I：
10.1016/j.surfcoat.2012.03.015
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Mixed material thin films are used in gradient index optical systems as their refractive index can be tailored to meet requirements. For the system to meet the optical performance requirements, it is necessary to relate the refractive index profile of the design to the volume fraction of the components of the mixture. Here we report that for electron-beam co-deposited Nb2O5-SiO2 mixtures, the most appropriate effective medium theory is Lorentz-Lorenz theory. The optical properties of a mixture are related to the structure of the composite. The structural properties of the mixtures studied justify the appropriateness of Lorentz-Lorenz theory for this kind of effective medium. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：3650 / 3657
页数：8
相关论文
共 29 条
[1]  
[Anonymous], 2004, POWD DIFFR FIL
[2]   OPTICAL-PROPERTIES OF THIN-FILMS [J].
ASPNES, DE .
THIN SOLID FILMS, 1982, 89 (03) :249-262
[3]   A general-purpose software for optical characterization of thin films:: specific features for microelectronic applications [J].
Bosch, S ;
Ferré-Borrull, J ;
Sancho-Parramon, J .
SOLID-STATE ELECTRONICS, 2001, 45 (05) :703-709
[4]   Calculation of various physics constants in heterogenous substances I Dielectricity constants and conductivity of mixed bodies from isotropic substances [J].
Bruggeman, DAG .
ANNALEN DER PHYSIK, 1935, 24 (07) :636-664
[5]   Synthesis and characterization Of SiO2-Nb2O5 systems prepared by the sol-gel method:: structural stability studies [J].
Francisco, MSP ;
Gushikem, Y .
JOURNAL OF MATERIALS CHEMISTRY, 2002, 12 (08) :2552-2558
[6]   Colours in metal glasses and in metallic films. [J].
Garnett, JCM .
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-CONTAINING PAPERS OF A MATHEMATICAL OR PHYSICAL CHARACTER, 1904, 203 :385-420
[7]   Deposition and spectral performance of an inhomogeneous broadband wide-angular antireflective coating [J].
Janicki, V. ;
Gaebler, D. ;
Wilbrandt, S. ;
Leitel, R. ;
Stenzel, O. ;
Kaiser, N. ;
Lappschies, M. ;
Goertz, B. ;
Ristau, D. ;
Rickers, C. ;
Vergoehl, M. .
APPLIED OPTICS, 2006, 45 (30) :7851-7857
[8]   Hybrid optical coating design for omnidirectional antireflection purposes [J].
Janicki, V ;
Wilbrandt, S ;
Stenzell, O ;
Gäbler, D ;
Kaiser, N ;
Tikhonravov, A ;
Trubetskov, M ;
Amotchkina, T .
JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS, 2005, 7 (08) :L9-L12
[9]   Parameterization of the optical functions of amorphous materials in the interband region [J].
Jellison, GE ;
Modine, FA .
APPLIED PHYSICS LETTERS, 1996, 69 (03) :371-373
[10]   Packing-density calculation of thin fluoride films from infrared transmission spectra [J].
Laux, S ;
Richter, W .
APPLIED OPTICS, 1996, 35 (01) :97-101
123