Investigation of dielectric properties and diffraction efficiency enhancements caused by photothermal effect in DR9 dye-doped nematic liquid crystal

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dc.contributor.authorKöysal, Oğuz
dc.contributor.authorOkutan, Mustafa
dc.contributor.authorGökçen, Muharrem
dc.date.accessioned2020-04-30T23:18:37Z
dc.date.available2020-04-30T23:18:37Z
dc.date.issued2011
dc.departmentDÜ, Fen-Edebiyat Fakültesi, Fizik Bölümüen_US
dc.descriptionGokcen, Muharrem/0000-0001-9063-3028en_US
dc.descriptionWOS: 000294579200013en_US
dc.description.abstractIn this work, we studied dielectric properties and laser-induced refractive index changes originating from photothermal effects of liquid crystal material doped with Disperse Red 9 (DR9) dye. Dye concentration is arranged to be between percentages changing from 0.2 wt.% to 1 wt.% in E63 nematic liquid crystal. Nonlinear optical properties such as diffraction efficiency (eta) and refractive index modulation (Delta n) were investigated by diffraction grating measurements. It was found the diffraction efficiency of pure E63 nematic liquid crystal is 1%. As the doping amount of DR9 dye in nematic LC is increased, diffraction efficiency took higher values and the maximum diffraction efficiency of 10% was gained with E63 doped with 0.8 wt.%DR9 dye. Moreover. dielectric permittivity and dielectric anisotropy values of the samples were investigated in the frequency range of 100 Hz-10 MHz by using dielectric spectroscopy technique. It was observed that dielectric constant values of the liquid crystal material are strongly affected by doping with dye. (C) 2011 Elsevier B.V. All rights reserved.en_US
dc.identifier.doi10.1016/j.optcom.2011.06.046en_US
dc.identifier.endpage4928en_US
dc.identifier.issn0030-4018
dc.identifier.issue20en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage4924en_US
dc.identifier.urihttps://doi.org/10.1016/j.optcom.2011.06.046
dc.identifier.urihttps://hdl.handle.net/20.500.12684/3436
dc.identifier.volume284en_US
dc.identifier.wosWOS:000294579200013en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Science Bven_US
dc.relation.ispartofOptics Communicationsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectDyeen_US
dc.subjectLiquid crystalen_US
dc.subjectPhotothermal effecten_US
dc.subjectHolographyen_US
dc.subjectDiffraction efficiencyen_US
dc.subjectDielectric anisotropyen_US
dc.titleInvestigation of dielectric properties and diffraction efficiency enhancements caused by photothermal effect in DR9 dye-doped nematic liquid crystalen_US
dc.typeArticleen_US

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