Widely tunable lifetimes for donor-acceptor pair states created by displacing an intrinsic atom in photonic crystals

This paper theoretically investigates the formation processes of intrinsic defect states in two-dimensional photonic crystals. We observe two types of defect states-what could be called the donor and acceptor states-created simultaneously by merely displacing a single rod atom from its regular site....

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Bibliographic Details
Published in:Journal of applied physics 2009-08, Vol.106 (4), p.043108-043108-4
Main Authors: Nojima, S., Nakahata, M.
Format: Article
Language:English
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Summary:This paper theoretically investigates the formation processes of intrinsic defect states in two-dimensional photonic crystals. We observe two types of defect states-what could be called the donor and acceptor states-created simultaneously by merely displacing a single rod atom from its regular site. The localization of light in the vicinity of these states is reasonably explained in terms of the stability of light around them. Finally, we demonstrate that the lifetimes of light trapped at these states can be tuned in a wide range by adjusting the position of the displaced rod appropriately.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.3204175