Photonic band structure of ZnO photonic crystal slab laser

We recently reported on the first realization of ultraviolet photonic crystal laser based on zinc oxide [Appl. Phys. Lett. {\bf 85}, 3657 (2004)]. Here we present the details of structural design and its optimization. We develop a computational super-cell technique, that allows a straightforward cal...

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Bibliographic Details
Published inarXiv.org
Main Authors Yamilov, A, X Wu, Cao, H
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 21.03.2005
Subjects
Band gap
Band structure
Band structure of solids
Crystal structure
Design optimization
Laser applications
Photonic band gaps
Photonic crystals
Sapphire
Slab lasers
Structural design
Substrates
Thin films
Zinc oxide
Zinc oxides
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Summary:We recently reported on the first realization of ultraviolet photonic crystal laser based on zinc oxide [Appl. Phys. Lett. {\bf 85}, 3657 (2004)]. Here we present the details of structural design and its optimization. We develop a computational super-cell technique, that allows a straightforward calculation of the photonic band structure of ZnO photonic crystal slab on sapphire substrate. We find that despite of small index contrast between the substrate and the photonic layer, the low order eigenmodes have predominantly transverse-electric (TE) or transverse-magnetic (TM) polarization. Because emission from ZnO thin film shows strong TE preference, we are able to limit our consideration to TE bands, spectrum of which can possess a complete photonic band gap with an appropriate choice of structure parameters. We demonstrate that the geometry of the system may be optimized so that a sizable band gap is achieved.
ISSN:2331-8422
DOI:10.48550/arxiv.0503170