Bloch wave analysis for optical band structure of III-nitrides photonic crystals

K. K. Ghosh; R. Ghosh; D. Ghosal

doi:10.1117/12.926762

15 October 2012 Bloch wave analysis for optical band structure of III-nitrides photonic crystals

K. K. Ghosh, R. Ghosh, D. Ghosal

Proceedings Volume 8549, 16th International Workshop on Physics of Semiconductor Devices; 85492P (2012) https://doi.org/10.1117/12.926762
Event: 16th International Workshop on Physics of Semiconductor Devices, 2011, Kanpur, India

Abstract

The results of our analytical study on the formation of optical bands of III-Nitride Photonic Crystals are presented in this paper. The analysis is based on the propagation of Bloch waves through microstructured periodic dielectric materials, taking a model of 2D holey crystal of square lattice of GaN as example. Band gaps are opened up for both TE and TM modes in the square lattice for different d/a ratios, 'd' and 'a' being the diameter and lattice constant. The transmission bandwidth is seen to be wider for decreasing air -hole diameter irrespective of the polarization mode of the propagating light. Complete photonic gap may be found for material system of relatively higher contrast ratio.

Citation Download Citation

K. K. Ghosh, R. Ghosh, and D. Ghosal "Bloch wave analysis for optical band structure of III-nitrides photonic crystals", Proc. SPIE 8549, 16th International Workshop on Physics of Semiconductor Devices, 85492P (15 October 2012); https://doi.org/10.1117/12.926762

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