Spatiotemporal optical coherence (STOC) manipulation suppresses coherent cross-talk and low-order geometrical aberrations in full-field swept-source optical coherence tomography

Dawid Borycki; Julia Sudyka; Maciej Wojtkowski

doi:10.1117/12.2526604

19 July 2019 Spatiotemporal optical coherence (STOC) manipulation suppresses coherent cross-talk and low-order geometrical aberrations in full-field swept-source optical coherence tomography

Dawid Borycki, Julia Sudyka, Maciej Wojtkowski

Author Affiliations +

Proceedings Volume 11078, Optical Coherence Imaging Techniques and Imaging in Scattering Media III; 110780A (2019) https://doi.org/10.1117/12.2526604
Event: European Conferences on Biomedical Optics, 2019, Munich, Germany

Abstract

Full-field swept-source optical coherence tomography (FF-SS-OCT) achieves high resolution imaging with wide-field illumination and parallel Fourier-domain detection. However, FF-SS-OCT is strongly susceptible to the cross-talk-generated noise from spatially coherent lasers. Here, we demonstrate how to overcome this problem with spatiotemporal optical coherence (STOC) manipulation. In STOC the time-varying inhomogeneous phase masks modulate the incident light. We show that by properly adjusting these phase masks, the spatial coherence can be reduced. As a result, the imaging system becomes spatially incoherent. Thus, the cross-talk-generated noise as well as the low-order geometrical aberrations can be suppressed. STOC approach is validated by imaging 1951 USAF resolution test chart covered by diffuser, scattering phantom and the rat skin ex vivo.

Citation Download Citation

Dawid Borycki, Julia Sudyka, and Maciej Wojtkowski "Spatiotemporal optical coherence (STOC) manipulation suppresses coherent cross-talk and low-order geometrical aberrations in full-field swept-source optical coherence tomography ", Proc. SPIE 11078, Optical Coherence Imaging Techniques and Imaging in Scattering Media III, 110780A (19 July 2019); https://doi.org/10.1117/12.2526604

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