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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 7 — Mar. 29, 2010
  • pp: 7101–7107

Simulations of wave propagation and disorder in 3D non-close-packed colloidal photonic crystals with low refractive index contrast

O. Glushko, R. Meisels, and F. Kuchar  »View Author Affiliations


Optics Express, Vol. 18, Issue 7, pp. 7101-7107 (2010)
http://dx.doi.org/10.1364/OE.18.007101


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Abstract

The plane-wave expansion method (PWEM), the multiple-scattering method (MSM) and the 3D finite-difference time-domain method (FDTD) are applied for simulations of propagation of electromagnetic waves through 3D colloidal photonic crystals. The system investigated is not a “usual” artificial opal with close-packed fcc lattice but a dilute bcc structure which occurs due to long-range repulsive interaction between electrically charged colloidal particles during the growth process. The basic optical properties of non-close-packed colloidal PhCs are explored by examining the band structure and reflection spectra for a bcc lattice of silica spheres in an aqueous medium. Finite size effects and correspondence between the Bragg model, band structure and reflection spectra are discussed. The effects of size, positional and missing-spheres disorder are investigated. In addition, by analyzing the results of experimental work we show that the fabricated structures have reduced plane-to-plane distance probably due to the effect of gravity during growth.

© 2010 OSA

OCIS Codes
(220.0220) Optical design and fabrication : Optical design and fabrication
(230.0230) Optical devices : Optical devices
(050.5298) Diffraction and gratings : Photonic crystals

ToC Category:
Photonic Crystals

History
Original Manuscript: December 10, 2009
Revised Manuscript: January 29, 2010
Manuscript Accepted: February 4, 2010
Published: March 23, 2010

Citation
O. Glushko, R. Meisels, and F. Kuchar, "Simulations of wave propagation and disorder in 3D non-close-packed colloidal photonic crystals with low refractive index contrast," Opt. Express 18, 7101-7107 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-7-7101


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