Growth of 3D photonic crystals by photolysis of CrO@@d2@Cl@@d2@
A method of three-dimensional (3D) holography is used for the growth of photonic crystals of sub-micron cell parameters by gas decomposition in a 3D interference field of UV laser light. Either amorphous or crystalline chromium oxides are obtained by photolysis of chromyl chloride CrO@@d2@Cl@@d2@ fo...
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Published in | Journal of crystal growth Vol. 311; no. 8; pp. 2590 - 2596 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
01.04.2009
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Online Access | Get full text |
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Summary: | A method of three-dimensional (3D) holography is used for the growth of photonic crystals of sub-micron cell parameters by gas decomposition in a 3D interference field of UV laser light. Either amorphous or crystalline chromium oxides are obtained by photolysis of chromyl chloride CrO@@d2@Cl@@d2@ for different experimental conditions. The most interesting product is obtained for a photolysis of CrO@@d2@Cl@@d2@ at low pressure, on a cooled TiO@@d2@ single-crystal substrate and for a higher beam energy. The growth begins with the formation of epitaxial CrO@@d2@ metastable phase which is partly transformed into Cr@@d2@O@@d3@ under UV irradiation. Due to crystallographic orientational relationships between CrO@@d2@ and Cr@@d2@O@@d3@, the growth of a well organized 3D photonic crystal of Cr@@d2@O@@d3@ phase goes on according to the 3D periodic modulations of electromagnetic energy of the interference field. In the present case, the Cr@@d2@O@@d3@ phase exhibits four sets of equivalent crystallographic orientations with respect to the single-crystal substrate. From such a result, one can expect to produce in a further work photonic crystals constituted of single-crystalline Cr@@d2@O@@d3@ phase in epitaxy onto a Cr@@d2@O@@d3@ or sapphire Al@@d2@O@@d3@ substrate. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 content type line 23 ObjectType-Feature-1 |
ISSN: | 0022-0248 |
DOI: | 10.1016/j.jcrysgro.2009.02.008 |