Polarization-sensitive optical coherence tomography with decorrelated channels

Haitham N. Zaatari; Nate J. Kemp; Taner Akkin; Henry Grady Rylander III; Thomas E. Milner

doi:10.1117/12.531329

1 July 2004 Polarization-sensitive optical coherence tomography with decorrelated channels

Haitham N. Zaatari, Nate J. Kemp, Taner Akkin, Henry Grady Rylander III, Thomas E. Milner

Proceedings Volume 5316, Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine VIII; (2004) https://doi.org/10.1117/12.531329
Event: Biomedical Optics 2004, 2004, San Jose, CA, United States

Abstract

We describe a Polarization Sensitive Optical Coherence Tomography (PS-OCT) system with de-correlated horizontal and vertical channels. Construction of PS-OCT depth-resolved images is achieved with a scanning bulk Michelson interferometer and a broadband TiAl₂O₃ femtosecond laser source. We de-correlate and delay horizontal and vertical channels using a birefringent crystal in the source path and calcite prism pairs in the sample and reference paths. Cross-correlation and phase changes between horizontal and vertical channels are measured at different reference-sample optical delays in correlated and de-correlated PS-OCT. PS-OCT with de-correlated (DPS-OCT) channels can broaden applications to include de-correlated Doppler imaging of blood flow and imaging the retinal nerve fiber layer with delayed channels. We achieve a differential delay of 0-400 microns between vertical and horizontal channels by translating the calcite prisms. DPS-OCT system design and experimental measurements are presented and discussed.

Citation Download Citation

Haitham N. Zaatari, Nate J. Kemp, Taner Akkin, Henry Grady Rylander III, and Thomas E. Milner "Polarization-sensitive optical coherence tomography with decorrelated channels", Proc. SPIE 5316, Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine VIII, (1 July 2004); https://doi.org/10.1117/12.531329

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KEYWORDS

Prisms

Calcite

Optical coherence tomography

Channel projecting optics

Mica

Polarization

Wave plates

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