Effect of electric field and temperature on holographic scattering from holographic polymer-dispersed liquid crystals
| Autor: | Irena Drevenšek-Olenik, M. A. Ellabban, Martin Fally, Hana Uršič |
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| Rok vydání: | 2007 |
| Předmět: |
Materials science
Holographic grating business.industry Scattering Organic Chemistry Holography Physics::Optics Grating Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Inorganic Chemistry Optics Liquid crystal law Electric field Spatial frequency Electrical and Electronic Engineering Physical and Theoretical Chemistry business Refractive index Spectroscopy |
| Zdroj: | Optical Materials. 29:1416-1422 |
| ISSN: | 0925-3467 |
| DOI: | 10.1016/j.optmat.2006.06.014 |
| Popis: | The influence of an external electric field or temperature on holographic scattering from holographic polymer-dispersed liquid crystals (H-PDLCs) was investigated experimentally. The auto-generated parasitic gratings are affected by an externally applied electric field in a similar manner as the elementary grating. We find that the threshold voltage, switching-on and -off times are independent on the grating vector. On the contrary, the suppression level of the refractive-index modulation is proportional to the spatial frequency. Heating of the sample reduces the strength of parasitic gratings analogously to the case of an external electric field. |
| Databáze: | OpenAIRE |
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