Novel device structures based on colloidal photonic crystals

Rajesh Rengarajan; Tushar Prasad; Vicki L. Colvin; Daniel Mittleman

doi:10.1117/12.451656

4 November 2002 Novel device structures based on colloidal photonic crystals

Rajesh Rengarajan, Tushar Prasad, Vicki L. Colvin, Daniel Mittleman

Proceedings Volume 4809, Nanoscale Optics and Applications; (2002) https://doi.org/10.1117/12.451656
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

We describe two different ideas for novel architectures based on photonic crystals of sub-micron colloids. The first involves the formation of photonic superlattices from colloidal photonic crystals. The superlattice periodicity induces the formation of minibands due to folding of the photonic band structure. This represents the first instance in which mid-gap states have been incorporated into a colloidal photonic crystal via a specifically engineered structural modification. The second idea involves applying the superprism concept to three-dimensionally periodic structures. Near a photonic band edge, the diffraction angle is extremely sensitive to the wavelength and propagation direction of the incident light. We analyze this effect in the context of macroporous polymer thin films formed from colloidal crystal templates.

Citation Download Citation

Rajesh Rengarajan, Tushar Prasad, Vicki L. Colvin, and Daniel Mittleman "Novel device structures based on colloidal photonic crystals", Proc. SPIE 4809, Nanoscale Optics and Applications, (4 November 2002); https://doi.org/10.1117/12.451656

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