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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 33 — Nov. 20, 2009
  • pp: 6485–6491

Structural and optical properties of wood and wood finishes studied using optical coherence tomography: application to an 18th century Italian violin

Gaël Latour, Jean-Philippe Echard, Balthazar Soulier, Isabelle Emond, Stéphane Vaiedelich, and Mady Elias  »View Author Affiliations


Applied Optics, Vol. 48, Issue 33, pp. 6485-6491 (2009)
http://dx.doi.org/10.1364/AO.48.006485


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Abstract

Optical coherence tomography (OCT) is especially attractive for the study of cultural heritage artifacts because it is noninvasive and nondestructive. We have developed an original full-field time-domain OCT system dedicated to the investigation of varnished and painted artifacts: an interferometric Mirau objective allows one to perform the scan without moving the works of art. The axial and transverse high resolution (respectively, 1.5 and 1 μm ) are well adapted to the detection of the investigated structures (pigment grains, wood fibers, etc.). The illumination spectrum is in the visible range (centered at 630 nm , 150 nm wide) to potentially allow us to perform spectroscopic OCT on pigment particles. The examination of wood samples coated with a traditional finish, demonstrates the ability of the system to detect particles, characterize layers thickness, and image the three-dimensional wood structures below the varnishes. OCT has finally been applied to study in situ the coated wood surface of an 18th century Italian violin and provides important information for its conservation treatment.

© 2009 Optical Society of America

OCIS Codes
(110.4500) Imaging systems : Optical coherence tomography
(180.0180) Microscopy : Microscopy
(180.1655) Microscopy : Coherence tomography

ToC Category:
Imaging Systems

History
Original Manuscript: July 24, 2009
Revised Manuscript: October 2, 2009
Manuscript Accepted: October 28, 2009
Published: November 16, 2009

Citation
Gaël Latour, Jean-Philippe Echard, Balthazar Soulier, Isabelle Emond, Stéphane Vaiedelich, and Mady Elias, "Structural and optical properties of wood and wood finishes studied using optical coherence tomography: application to an 18th century Italian violin," Appl. Opt. 48, 6485-6491 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-33-6485

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