Light sources for optical cross-talk suppression in wide-field optical coherence tomography

Boris Karamata; Markus Laubscher; Patrick Lambelet; Tiemo Anhut; Theo Lasser

doi:10.1117/12.530337

1 July 2004 Light sources for optical cross-talk suppression in wide-field optical coherence tomography

Boris Karamata, Markus Laubscher, Patrick Lambelet, Tiemo Anhut, Theo Lasser

Proceedings Volume 5316, Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine VIII; (2004) https://doi.org/10.1117/12.530337
Event: Biomedical Optics 2004, 2004, San Jose, CA, United States

Abstract

The crucial role played by the source's degree of spatial coherence in wide-field optical coherence tomography is shown experimentally. Spatially coherent illumination, as obtained with a pulsed laser, generates a considerable amount of coherent optical cross-talk. The latter can be suppressed with spatially incoherent illumination as provided by a thermal or a pseudothermal light source. Demonstration is made for a US air force resolution target covered with a scattering solution made of polystyrene microspheres suspended in water. The origin and nature of cross-talk signals are discussed, as well as specific limitations of spatially incoherent sources.

Citation Download Citation

Boris Karamata, Markus Laubscher, Patrick Lambelet, Tiemo Anhut, and Theo Lasser "Light sources for optical cross-talk suppression in wide-field optical coherence tomography", Proc. SPIE 5316, Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine VIII, (1 July 2004); https://doi.org/10.1117/12.530337

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