Angular dependence of the stopband of an inverse opal structure

Author

Harrison, G.J. ; Arnold, J.M. ; Johnson, N.P.

Author_Institution

Dept. of Electron. & Electr. Eng., Glasgow Univ., UK

fYear

2000

fDate

10-15 Sept. 2000

Abstract

Summary form only. We present an outline of the fabrication method for an inverted opal structure which consists of an FCC arrangement of air spheres in TiO/sub 2/. The structure was formed by a modification of a previous method in which a solution of latex spheres was dried under an infrared lamp and infiltrated with titanium ethoxide. The composite was then calcined at 575/spl deg/C during which the precursor was converted to TiO/sub 2/ and the latex spheres burnt away, leaving an ordered lattice of air spheres in titania. The reflectance spectra were measured as a function of wavelength for several angles of incidence. We compared these with theoretical calculations using the transfer matrix method.

Keywords

infrared spectra; photonic band gap; reflectivity; refractive index; titanium compounds; FCC arrangement; TiO/sub 2/; air spheres; angular dependence; calcination; effective refractive index; fabrication method; inverse opal structure; latex spheres; ordered lattice; reflectance spectra; stopband; titania; transfer matrix method; wavelength dependence; Fabrication; Lamps; Optical reflection; Refractive index; Skin; Thickness measurement; Titanium;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Europe, 2000. Conference Digest. 2000 Conference on

Conference_Location

Nice

Print_ISBN

0-7803-6319-1

Type

conf

DOI

10.1109/CLEOE.2000.909746

Filename

909746