Dark-field polarization-sensitive optical coherence tomography

Yeoreum Yoon, Qingyun Li, Viet Hoan Le, Won Hyuk Jang, Taejun Wang, Bumju Kim, Sihyung Son, Wan Kyun Chung, Chulmin Joo, Ki Hean Kim

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

Polarization-sensitive optical coherence tomography (PS-OCT) is a functional OCT providing both structural and birefringent information of the sample, and it has been applied to the studies of various organs having polarization properties. Fiber-based PS-OCT is sensitive to specular reflection from the sample surface, because signal saturation due to the strong specular reflection can make the polarization measurement difficult. We developed a dark-field PS-OCT which can avoid the specular reflection problem. Dark-field PS-OCT was implemented by adapting a hybrid method of Bessel-beam illumination and Gaussian-beam detection, and a PS-OCT method based on passive delay unit (PDU). The new system was characterized in comparison with the conventional Gaussian-beam based method in both polarization components and various samples including the human skin. Dark-field PS-OCT performed as good as the conventional PSOCT without the specular reflection artifact. Dark-field PS-OCT may be useful in practical situations where the specular reflection is unavoidable.

Original languageEnglish
Pages (from-to)12874-12886
Number of pages13
JournalOptics Express
Volume23
Issue number10
DOIs
Publication statusPublished - 2015

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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