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Crosstalk rejection in full-field optical coherence tomography using spatially incoherent illumination with a partially coherent source

Publication ,  Journal Article
Dhalla, AH; Migacz, J; Izatt, JA
Published in: Progress in Biomedical Optics and Imaging - Proceedings of SPIE
May 3, 2010

The recent advent of ultra high frame rate cameras gives rise to the possibility of constructing swept source full-field OCT systems with achievable volume rates approaching 10Hz and net A-scan rates approaching 10MHz. Unfortunately, when illuminated with partially coherent light, full-field OCT in turbid media suffers resolution and SNR degradation from coherent multiple scattering, a phenomenon commonly referred to as crosstalk. As a result, most FFOCT systems employ thermal sources, which provide spatially incoherent illumination to achieve crosstalk rejection. However, these thermal sources preclude the use of swept source lasers. In this work, we demonstrate the use of a carefully configured FFOCT system employing multimode fiber in the illumination arm to reduce the spatial coherence of a partially coherent source. By reducing the coherence area below the system resolution, the illumination becomes effectively spatially incoherent and crosstalk is largely rejected. We compare FFOCT images of a USAF test chart positioned beneath both transparent and turbid phantoms using both illumination schemes. © 2010 Copyright SPIE - The International Society for Optical Engineering.

Duke Scholars

Published In

Progress in Biomedical Optics and Imaging - Proceedings of SPIE

DOI

ISSN

1605-7422

Publication Date

May 3, 2010

Volume

7554
 

Citation

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ICMJE
MLA
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Dhalla, A. H., Migacz, J., & Izatt, J. A. (2010). Crosstalk rejection in full-field optical coherence tomography using spatially incoherent illumination with a partially coherent source. Progress in Biomedical Optics and Imaging - Proceedings of SPIE, 7554. https://doi.org/10.1117/12.843391
Dhalla, A. H., J. Migacz, and J. A. Izatt. “Crosstalk rejection in full-field optical coherence tomography using spatially incoherent illumination with a partially coherent source.” Progress in Biomedical Optics and Imaging - Proceedings of SPIE 7554 (May 3, 2010). https://doi.org/10.1117/12.843391.
Dhalla AH, Migacz J, Izatt JA. Crosstalk rejection in full-field optical coherence tomography using spatially incoherent illumination with a partially coherent source. Progress in Biomedical Optics and Imaging - Proceedings of SPIE. 2010 May 3;7554.
Dhalla, A. H., et al. “Crosstalk rejection in full-field optical coherence tomography using spatially incoherent illumination with a partially coherent source.” Progress in Biomedical Optics and Imaging - Proceedings of SPIE, vol. 7554, May 2010. Scopus, doi:10.1117/12.843391.
Dhalla AH, Migacz J, Izatt JA. Crosstalk rejection in full-field optical coherence tomography using spatially incoherent illumination with a partially coherent source. Progress in Biomedical Optics and Imaging - Proceedings of SPIE. 2010 May 3;7554.

Published In

Progress in Biomedical Optics and Imaging - Proceedings of SPIE

DOI

ISSN

1605-7422

Publication Date

May 3, 2010

Volume

7554