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Crystals 2014, 4(3), 342-350; doi:10.3390/cryst4030342

High-Q Defect-Free 2D Photonic Crystal Cavity from Random Localised Disorder

1,* , 1
1 School of Physics, The University of Melbourne, Parkville, Victoria 3010, Australia 2 School of Physics, The University of Sydney, New South Wales 2006, Australia
* Author to whom correspondence should be addressed.
Received: 21 May 2014 / Revised: 29 May 2014 / Accepted: 4 July 2014 / Published: 16 July 2014
(This article belongs to the Special Issue Photonic Crystals)
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We propose a high-Q photonic crystal cavity formed by introducing random disorder to the central region of an otherwise defect-free photonic crystal slab (PhC). Three-dimensional finite-difference time-domain simulations determine the frequency, quality factor, Q, and modal volume, V, of the localized modes formed by the disorder. Relatively large Purcell factors of 500–800 are calculated for these cavities, which can be achieved for a large range of degrees of disorders.
Keywords: defect-free; 2D photonic crystal; positional disorder defect-free; 2D photonic crystal; positional disorder
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Chung, K.; Karle, T.J.; Rajasekharan, R.; de Sterke, C.M.; Tomljenovic-Hanic, S. High-Q Defect-Free 2D Photonic Crystal Cavity from Random Localised Disorder. Crystals 2014, 4, 342-350.

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