Two-dimensional photonic lattices in polymer-dispersed liquid crystal composites
- Author(s)
- Miha Devetak, Jerneja Milavec, Romano Rupp, B Yao, Irena Drevensek-Olenik
- Abstract
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.
- Organisation(s)
- Physics of Functional Materials
- External organisation(s)
- University of Ljubljana, Jožef Stefan Institute (IJS), Chinese Academy of Sciences (CAS)
- Journal
- Journal of Optics A: Pure and Applied Optics (Print Edition)
- Volume
- 11
- No. of pages
- 8
- ISSN
- 1464-4258
- DOI
- https://doi.org/10.1088/1464-4258/11/2/024020
- Publication date
- 2009
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103021 Optics
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/twodimensional-photonic-lattices-in-polymerdispersed-liquid-crystal-composites(889bd630-d5c7-44ed-8a33-bc41a2180be8).html