Polarization-sensitive optical coherence tomography with de-correlated channels

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

doi:10.1117/12.531329

Polarization-sensitive optical coherence tomography with de-correlated channels

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

Biomedical Engineering

Research output: Contribution to journal › Conference article › peer-review

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.

Original language	English (US)
Pages (from-to)	360-364
Number of pages	5
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	5316
DOIs	https://doi.org/10.1117/12.531329
State	Published - Oct 27 2004
Event	Progress in Biomedical Optics and Imaging - Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine VIII - San Jose, CA, United States Duration: Jan 26 2004 → Jan 28 2004

Keywords

Birefringence
De-correlated channels
Polarization sensitive optical coherence tomography

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10.1117/12.531329

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title = "Polarization-sensitive optical coherence tomography with de-correlated channels",

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.",

keywords = "Birefringence, De-correlated channels, Polarization sensitive optical coherence tomography",

author = "Zaatari, {Haitham N.} and Kemp, {Nate J.} and Taner Akkin and Rylander, {H. Grady} and Milner, {Thomas E.}",

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T1 - Polarization-sensitive optical coherence tomography with de-correlated channels

AU - Zaatari, Haitham N.

AU - Kemp, Nate J.

AU - Akkin, Taner

AU - Rylander, H. Grady

AU - Milner, Thomas E.

PY - 2004/10/27

Y1 - 2004/10/27

N2 - 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.

AB - 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.

KW - Birefringence

KW - De-correlated channels

KW - Polarization sensitive optical coherence tomography

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M3 - Conference article

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JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

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Y2 - 26 January 2004 through 28 January 2004

ER -

Polarization-sensitive optical coherence tomography with de-correlated channels

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