Bare, sintered, coated, and inverted opals for photonic bandgap properties at visible wavelengths

Vijaya Ramarao; Tushar Prasad

doi:10.1117/12.447095

30 October 2001 Bare, sintered, coated, and inverted opals for photonic bandgap properties at visible wavelengths

Vijaya Ramarao, Tushar Prasad

Proceedings Volume 4598, Photonics Technology in the 21st Century; (2001) https://doi.org/10.1117/12.447095
Event: International Symposium on Photonics and Applications, 2001, Singapore, Singapore

Abstract

We have performed calculations using the Transfer Matrix method to study the photonic band gap properties of bare opals of different diameters, different thicknesses, sintered opals with the filling fractions varying between 0.74 and 1.00, partial and complete coating with semiconducting GaN and lastly, inverted opals. Two prominent directions [100] and [111] have been analyzed. Sintering improves the gap and shifts the energy range of its occurrence, while partial coating gives a better bandgap than complete coating. Inverted opals with semiconductor background shows a gap with transmission decreasing to much lower values, as expected due to an improvement in dielectric contrast.

Citation Download Citation

Vijaya Ramarao and Tushar Prasad "Bare, sintered, coated, and inverted opals for photonic bandgap properties at visible wavelengths", Proc. SPIE 4598, Photonics Technology in the 21st Century, (30 October 2001); https://doi.org/10.1117/12.447095

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