Peculiarities of photonic band gap width dependence upon concentration of the admixture layers randomly included in composite material
Considered is a model of photonic crystalline superlattice as a set of macroscopically homogeneous layers with randomly included extrinsic (with respect to the ideal superlattice) layers of a variable thickness and composition. The polariton spectrum of such a non-ideal superlattice with an arbitrar...
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| Date: | 2008 |
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| Main Authors: | , , |
| Format: | Article |
| Language: | English |
| Published: |
НТК «Інститут монокристалів» НАН України
2008
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| Series: | Functional Materials |
| Subjects: | |
| Online Access: | http://dspace.nbuv.gov.ua/handle/123456789/134544 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Peculiarities of photonic band gap width dependence upon concentration of the admixture layers randomly included in composite material // V.V. Rumyantsev, S.A. Fedorov, E.Ya. Shtaerman // Functional Materials. — 2008. — Т. 15, № 2. — С. 223-228. — Бібліогр.: 9 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Summary: | Considered is a model of photonic crystalline superlattice as a set of macroscopically homogeneous layers with randomly included extrinsic (with respect to the ideal superlattice) layers of a variable thickness and composition. The polariton spectrum of such a non-ideal superlattice with an arbitrary number of layers per elementary cell obtained within the virtual crystal method is specified for the Si - diamond crystal system. The peculiarities of the band gap width dependence upon concentration of admixture layers and refractive index are considered. The study carried out shows that optical characteristics of a crystalline superlattice may vary significantly due to transformation of its polariton spectrum caused by the presence of admixture layers. |
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