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Effect of transparent wood on the polarization degree of light
Department of Applied Physics, KTH–Royal Institute of Technology, Stockholm, Sweden.
Department of Applied Physics, KTH–Royal Institute of Technology, Stockholm, Sweden.
Wallenberg Wood Science Center, Department of Fiber and Polymer Technology, KTH–Royal Institute of Technology, Stockholm, Sweden.
Department of Applied Physics, KTH–Royal Institute of Technology, Stockholm, Sweden.
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2019 (Engelska)Ingår i: Optics Letters, ISSN 0146-9592, E-ISSN 1539-4794, Vol. 44, nr 12, s. 2962-2965Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

We report on the study of polarization properties of light propagating through transparent wood (TW), which is an anisotropically scattering medium, and consider two cases: completely polarized and totally unpolarized light. It was demonstrated that scattered light distribution is affected by the polarization state of incident light. Scattering is the most efficient for light polarized parallel to cellulose fibers. Furthermore, unpolarized light becomes partially polarized (with a polarization degree of 50%) after propagating through the TW. In the case of totally polarized incident light, however, the degree of polarization of transmitted light is decreased, in an extreme case to a few percent, and reveals an unusual angular dependence on the material orientation. The internal hierarchical complex structure of the material, in particular cellulose fibrils organized in lamellae, is believed to be responsible for the change of the light polarization degree. It was demonstrated that the depolarization properties are determined by the angle between the polarization of light and the wood fibers, emphasizing the impact of their internal structure, unique for different wood species.

Ort, förlag, år, upplaga, sidor
Optical Society of America, 2019. Vol. 44, nr 12, s. 2962-2965
Nationell ämneskategori
Atom- och molekylfysik och optik Pappers-, massa- och fiberteknik
Identifikatorer
URN: urn:nbn:se:umu:diva-221276DOI: 10.1364/ol.44.002962PubMedID: 31199356Scopus ID: 2-s2.0-85067943575OAI: oai:DiVA.org:umu-221276DiVA, id: diva2:1839271
Forskningsfinansiär
Vetenskapsrådet, 621-2012-4421Tillgänglig från: 2024-02-20 Skapad: 2024-02-20 Senast uppdaterad: 2024-02-21Bibliografiskt granskad

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Yan, Max

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Sychugov, IlyaYan, Max
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Optics Letters
Atom- och molekylfysik och optikPappers-, massa- och fiberteknik

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