Polarization holographic gratings in PAZO azopolymer recorded with different recording-beams polarizations

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creativework.publisherInstitute of Physics Publishinghelen.craven@iop.orgen
dc.contributor.authorMateev G.
dc.contributor.authorNedelchev L.
dc.contributor.authorIvanov D.
dc.contributor.authorTomova R.
dc.contributor.authorPetrova P.
dc.contributor.authorStrijkova V.
dc.contributor.authorBerberova N.
dc.contributor.authorNazarova D.
dc.date.accessioned2024-07-10T14:27:04Z
dc.date.accessioned2024-07-10T14:48:57Z
dc.date.available2024-07-10T14:27:04Z
dc.date.available2024-07-10T14:48:57Z
dc.date.issued2018-04-05
dc.description.abstractPolarization holographic gratings (PHG) were recorded using a laser emitting a wavelength of 491 nm in thin films of the (poly[1-[4-(3-carboxy-4-hydroxyphenylazo)benzenesulfonamido]-1,2-ethanediyl, sodium salt]) azopolymer, shortly denoted as PAZO. Thin azopolymer films with various thicknesses were spin-coated on plastic and glass substrates. Four different polarization states of the recording beams were used, and the results compared: a) two vertical linear polarizations, b) horizontal and vertical linear polarizations, c) linear polarizations at +45° and -45° relative to the recording plane, and d) two orthogonal circular polarizations - left- and right-handed (LCP and RCP). The diffraction efficiency in the +1 diffraction order was monitored in real time by a probing laser beam at the wavelength of 635 nm. The results indicate that the highest diffraction efficiency is achieved when recording with orthogonal polarizations - linear at ±45° or left and right circular. This is explained by the ability of the azopolymer material to record the variations in the polarization state of light better than the variations in its intensity. The holographic gratings obtained can be used to enhance the light-extraction efficiency of an OLED device.
dc.identifier.doi10.1088/1742-6596/992/1/012056
dc.identifier.issn1742-6596
dc.identifier.issn1742-6588
dc.identifier.scopusSCOPUS_ID:85045728191en
dc.identifier.urihttps://rlib.uctm.edu/handle/123456789/462
dc.language.isoen
dc.source.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85045728191&origin=inward
dc.titlePolarization holographic gratings in PAZO azopolymer recorded with different recording-beams polarizations
dc.typeConference Paper
oaire.citation.issue1
oaire.citation.volume992
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