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Proceedings Paper

Low-coherence ESPI in the investigation of ancient terracotta warriors
Author(s): Gerd Gulker; Arne Kraft
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Paper Abstract

In order to investigate deterioration processes in the paint layers on the famous 2000-yr-old Chinese Terracotta warriors, a low coherence ESPI system was designed. In this modified set-up a short-coherent superluminescence diode instead of a laser is used. By changing the path length of one of the interfering beams it is possible to select a region limited in depth where deformations are measured even if it is below the surface. Results on an artificial test object and on original terracotta fragments demonstrate the limits and the capabilities of the new method.

Paper Details

Date Published: 27 May 2003
PDF: 6 pages
Proc. SPIE 4933, Speckle Metrology 2003, (27 May 2003); doi: 10.1117/12.516576
Show Author Affiliations
Gerd Gulker, Carl von Ossietzky Univ. Oldenburg (Germany)
Arne Kraft, Carl von Ossietzky Univ. Oldenburg (Germany)

Published in SPIE Proceedings Vol. 4933:
Speckle Metrology 2003
Kay Gastinger; Ole Johan Lokberg; Svein Winther, Editor(s)

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