University of Oulu

Niskanen, I., Räty, J., Soetedjo, H. et al. Measurement of the degree of polarisation of thermally modified Scots pine using a Stokes imaging polarimeter. Opt Rev 27, 178–182 (2020).

Measurement of the degree of polarisation of thermally modified Scots pine using a Stokes imaging polarimeter

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Author: Niskanen, Ilpo1,2; Räty, Jukka3; Soetedjo, Hariyadi4;
Organizations: 1Faculty of Technology, Structures and Construction Technology, University of Oulu, P.O. Box 7300, FI-90014, Oulu, Finland
2Public Works Research Institute, 1-6 Minamihara, Tsukuba, Ibaraki, 300-2621, Japan
3Unit of Measurement Technology (MITY), University of Oulu, Technology Park 127, FI-87400, Kajaani, Finland
4Center for Integrated Research and Innovation (CIRNOV), University of Ahmad Dahlan, Jalan Cendana No 9A, Semaki, Yogyakarta, 55166, Indonesia
5National Institute of Advanced Industrial Science and Technology/Geological Survey of Japan (AIST/GSJ) Central 7, 1-1-Higashi, Tsukuba, Ibaraki, 305-8567, Japan
6National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba East, 1-2-1 Namiki, Tsukuba, Ibaraki, 305-8564, Japan
7Optical Informatio Processing and Systems Engineering Division, The Graduate School for the Creation of New Photonics Industries, 1955-1, Kurematsucho, Nishi-ku, Hamamatsu, Shizuoka, 431-1202, Japan
8Department of Optical Engineering/Center for Optical Research and Education (CORE), Utsunomiya University, 7-1-2, Yoto, Utsunomiya, Tochigi, 321-8585, Japan
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 0.7 MB)
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Language: English
Published: Springer Nature, 2020
Publish Date: 2020-04-27


This study measured the polarised light reflected from the surface of thermally modified Scots pine (Pinus sylvestris L.) wood using a Stokes imaging polarimeter. The data were analysed using the Mueller matrix method. The Scots pine boards were heat treated in an oven at temperatures of 160 ºC, 200 ºC and 220 ºC, with a heat treatment time of 3 h at the maximum temperature. The results indicated that the chemical composition of the thermally modified wood underwent a permanent transformation, leading to a change in the degree of polarisation of the reflected light. The presented method provides useful information for inspecting the quality of thermally modified wood products.

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Series: Optical review
ISSN: 1340-6000
ISSN-E: 1349-9432
ISSN-L: 1340-6000
Volume: 27
Pages: 178 - 182
DOI: 10.1007/s10043-019-00572-w
Type of Publication: A1 Journal article – refereed
Field of Science: 116 Chemical sciences
111 Mathematics
114 Physical sciences
213 Electronic, automation and communications engineering, electronics
216 Materials engineering
Funding: Open access funding provided by University of Oulu including Oulu University Hospital.
Copyright information: © 2020 The Author(s). Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit