Ultrahigh-Resolution Transversal Polarization-Sensitive Optical Coherence Tomography: Structural Analysis and Strain-Mapping
Autor: | David Stifter, Michael Pircher, Christoph K. Hitzenberger, Gabi Grützner, Gisela Ahrens, Karin Wiesauer, Reinhold Oster, Rainer Engelke |
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Rok vydání: | 2008 |
Předmět: | |
Zdroj: | Fracture of Nano and Engineering Materials and Structures ISBN: 9781402049712 Scopus-Elsevier |
DOI: | 10.1007/1-4020-4972-2_287 |
Popis: | Optical coherence tomography (OCT), originally developed and so far nearly exclusively used for biomedical applications (e.g., [1,2]), is a contact-free, non-destructive technique based on low-coherence interferometry to image structures within translucent and turbid materials. Commonly, cross-sectional reflectivity images with a depth-resolution determined by the coherence length of the near-infrared light source are obtained. When OCT is performed in a polarization sensitive way (PS-OCT), additional information about birefringence within a material is obtained by mapping the retardation between ordinary and extraordinary rays [3]. Because birefringence is induced when strain occurs, PS-OCT provides depth resolved information about the internal stress within a sample. |
Databáze: | OpenAIRE |
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