Time-Resolved Optical Spectroscopy of Wood

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Abstract:

We have proposed and experimentally demonstrated that picosecond time-resolved optical spectroscopy in the visible/near-infrared (NIR) region (700–1040 nm) is a useful technique for noninvasive characterization of wood. This technique has been demonstrated on both softwood and hardwood samples treated in different ways simulating the aging process suffered by waterlogged woods. In all the cases, alterations of absorption and scattering spectra were observed, revealing changes of chemical and structural composition.

Keywords: NEAR INFRARED; TIME-RESOLVED SPECTROSCOPY; TURBID MEDIA; WOOD

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/000370208784344424

Affiliations: 1: CNR-INFM and CNR-IFN, Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy 2: Università Milano-Bicocca, Dipartimento di Scienze dell' Ambiente e del Territorio, Piazza della Scienza 1, 20126 Milano, Italy 3: Institut für Lasertechnologien in der Medizin und Meßtechnik, Helmholtzstr.12, D-89081 Ulm, Germany

Publication date: May 1, 2008

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