Optical diffraction by colloidal crystals

Author

Allard, M. ; Sargent, E.H. ; Kumacheva, Eugenia ; Kalinina, O.

Author_Institution

Dept. of Electr. & Comput. Eng., Toronto Univ., Ont., Canada

fYear

2000

fDate

7-12 May 2000

Firstpage

182

Lastpage

183

Abstract

Summary form only given. Colloidal crystals represent a promising avenue to realizing photonic bandgap materials. Optical diffraction in these crystals, usually observed in transmission spectra provides ample information about the internal structure. We report the measurement of the reflection spectrum at various angles of incidence and show how these measurements can be used to evaluate the quality of the internal ordering of colloidal crystals. Our colloidal crystals consist of poly(methyl methacrylate) latex microspheres that have settled under controlled oscillatory shear to produce three-dimensional close-packed face-centered cubic arrays.

Keywords

colloids; infrared spectra; light diffraction; optical polymers; photonic band gap; reflectivity; visible spectra; angles of incidence; colloidal crystals; controlled oscillatory shear; internal ordering; internal structure; optical diffraction; photonic bandgap materials; poly(methyl methacrylate) latex microspheres; reflection spectrum; three-dimensional close-packed face-centered cubic arrays; transmission spectra; Colloidal crystals; Data mining; Optical arrays; Optical device fabrication; Optical diffraction; Optical filters; Optical reflection; Periodic structures; Photonic band gap; Photonic crystals;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 2000. (CLEO 2000). Conference on

Conference_Location

San Francisco, CA, USA

Print_ISBN

1-55752-634-6

Type

conf

DOI

10.1109/CLEO.2000.906886

Filename

906886