Polarization Sensitive Optical Coherence Tomography for Materials Characterization

• Main Authors: Kunakorn Palawong, Somchai Sonsupap, Santi Maensiri, Panomsak Meemon
• Format: บทความวารสาร
• Language: English
• Published: Science Faculty of Chiang Mai University 2019
• Online Access: http://it.science.cmu.ac.th/ejournal/dl.php?journal_id=9416; http://cmuir.cmu.ac.th/jspui/handle/6653943832/64202
• Institution: Chiang Mai University

Polarization sensitive optical coherence tomography (PS-OCT) is an extension of optical coherence tomography (OCT), which is a technique of non-contact and non-destructive 3D imaging. PS-OCT can provide cross-sectional image of not only the inner structure of a sample but also its birefringence properties, such as phase retardation and crystal axis orientation. In this paper, the implementation of our custom-designed PS-OCT system is descripted. The developed PS-OCT system has been designed for characterization and investigation of the birefringence properties of fibrous materials. Examples of the application of the developed PS-OCT for characterizing the birefringence of a cover slide glass, a multi-layered plastic tape, and a thin film of fibrous materials fabricated by electrospinning technique are presented. The experimental results verified that the implemented PS-OCT system can differentiate between isotropic and anisotropic media.