Title :
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
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;
Conference_Titel :
Lasers and Electro-Optics Europe, 2000. Conference Digest. 2000 Conference on
Conference_Location :
Nice
Print_ISBN :
0-7803-6319-1
DOI :
10.1109/CLEOE.2000.909746
