Strong effects of photonic band structures on the diffraction of colloidal crystals

Willem L. Vos; Rudolf Sprik; Alfons van Blaaderen; Arnout Imhof; Ad Lagendijk; Gerard H. Wegdam

doi:10.1103/PhysRevB.53.16231

Strong effects of photonic band structures on the diffraction of colloidal crystals

Willem L. Vos, Rudolf Sprik, Alfons van Blaaderen, Arnout Imhof, Ad Lagendijk, Gerard H. Wegdam

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Abstract

The influence of photonic band structures on optical diffraction has been studied with colloidal crystals with large refractive index ratios up to 1.45 and polarizibilities per volume as large as 0.6. It is found that the apparent Bragg spacings are strongly dependent on the wavelength of light. The dynamical diffraction theory that correctly describes weak photonic effects encountered in x-ray diffraction also breaks down. Two simple models are presented that give a much better description of the diffraction of photonic crystals.

Original language	English
Pages (from-to)	16231-16235
Number of pages	5
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	53
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevB.53.16231
Publication status	Published - 15 Jun 1996
Externally published	Yes

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Strong effects of photonic band structures on the diffraction of colloidal crystals

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