Two-dimensional photonic lattices in polymer-dispersed liquid crystal composites
Data(s) |
01/02/2009
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Resumo |
The relationship between liquid crystal orientational ordering and optical diffraction properties is investigated for a two-dimensional square photonic lattice fabricated in a polymer-dispersed liquid crystal (PDLC) composite. Modifications of the nematic director field in the liquid crystal domains were induced by an external applied voltage and by heating over the nematic-isotropic (N-I) phase transition. They were studied by optical polarization microscopy and by analysing far-field optical diffraction patterns. The intensities of various diffraction orders (from the zeroth up to the eighth diffraction order) were monitored with a CCD camera, and their variations were correlated with the modifications of the director field. |
Identificador | |
Idioma(s) |
英语 |
Palavras-Chave | #数理科学和化学 #生物光学与光生物物理学 #光、激光生物医学 #polymer-dispersed liquid crystals #holographic lithography #photonic crystal #square lattice |
Tipo |
期刊论文 |