Advanced polarization sensitive analysis in optical coherence tomography

Aleksandra Wieloszyńska; Marcin R. Strąkowski

doi:10.1117/12.2273962

23 August 2017 Advanced polarization sensitive analysis in optical coherence tomography

Aleksandra Wieloszyńska, Marcin R. Strąkowski

Author Affiliations +

Proceedings Volume 10373, Applied Optical Metrology II; 103730Z (2017) https://doi.org/10.1117/12.2273962
Event: SPIE Optical Engineering + Applications, 2017, San Diego, California, United States

Abstract

The optical coherence tomography (OCT) is an optical imaging method, which is widely applied in variety applications. This technology is used to cross-sectional or surface imaging with high resolution in non-contact and non-destructive way. OCT is very useful in medical applications like ophthalmology, dermatology or dentistry, as well as beyond biomedical fields like stress mapping in polymers or protective coatings defects detection. Standard OCT imaging is based on intensity images which can visualize the inner structure of scattering devices. However, there is a number of extensions improving the OCT measurement abilities. The main of them are the polarization sensitive OCT (PS-OCT), Doppler enable OCT (D-OCT) or spectroscopic OCT (S-OCT). Our research activities have been focused on PS-OCT systems. The polarization sensitive analysis delivers an useful information about optical anisotropic properties of the evaluated sample. This kind of measurements is very important for inner stress monitoring or e.g. tissue recognition. Based on our research results and knowledge the standard PS-OCT provide only data about birefringence of the measured sample. However, based on the OCT measurements more information including depolarization and diattenuation might be obtained. In our work, the method based on Jones formalism are going to be presented. It is used to determine birefringence, dichroism and optic axis orientation of the tested sample. In this contribution the setup of the optical system, as well as tests results verifying the measurements abilities of the system are going to be presented. The brief discussion about the effectiveness and usefulness of this approach will be carried out.

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Aleksandra Wieloszyńska and Marcin R. Strąkowski "Advanced polarization sensitive analysis in optical coherence tomography", Proc. SPIE 10373, Applied Optical Metrology II, 103730Z (23 August 2017); https://doi.org/10.1117/12.2273962

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KEYWORDS

Optical coherence tomography

Polarization

Birefringence

Biomedical optics

Image resolution

Nondestructive evaluation

Optical imaging

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