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Crosstalk rejection in parallel optical coherence tomography using spatially incoherent illumination with partially coherent sources.

Publication ,  Journal Article
Dhalla, A-H; Migacz, JV; Izatt, JA
Published in: Optics letters
July 2010

The continuing improvement of high-speed area-scan cameras has made possible the construction of parallel optical coherence tomography (OCT) systems that are competitive with the fastest demonstrated swept-source OCT systems. Unfortunately, when imaging through turbid media using a partially coherent source, parallel OCT suffers resolution loss from coherent multiple scattering, a phenomenon known as crosstalk. We demonstrate the use of a full-field OCT system employing multimode fiber in the illumination arm to reduce the spatial coherence of a partially coherent source. By reducing the spatial coherence area below the system's lateral resolution, we create a spatial coherence gate that rejects these multiply scattered photons. We quantify the image quality and resolution improvement of this method by comparing images of a USAF test chart acquired beneath turbid phantoms using both coherent and incoherent illumination and computing the resulting modulation transfer functions. We demonstrate the feasibility of this method for imaging biological specimens by imaging a Drosophila melanogaster sample.

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Published In

Optics letters

DOI

EISSN

1539-4794

ISSN

0146-9592

Publication Date

July 2010

Volume

35

Issue

13

Start / End Page

2305 / 2307

Related Subject Headings

  • Tomography, Optical Coherence
  • Time Factors
  • Scattering, Radiation
  • Optics
  • Lighting
  • Drosophila melanogaster
  • Artifacts
  • Animals
  • 5102 Atomic, molecular and optical physics
  • 4009 Electronics, sensors and digital hardware
 

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Dhalla, A.-H., Migacz, J. V., & Izatt, J. A. (2010). Crosstalk rejection in parallel optical coherence tomography using spatially incoherent illumination with partially coherent sources. Optics Letters, 35(13), 2305–2307. https://doi.org/10.1364/ol.35.002305
Dhalla, Al-Hafeez, Justin V. Migacz, and Joseph A. Izatt. “Crosstalk rejection in parallel optical coherence tomography using spatially incoherent illumination with partially coherent sources.Optics Letters 35, no. 13 (July 2010): 2305–7. https://doi.org/10.1364/ol.35.002305.
Dhalla, Al-Hafeez, et al. “Crosstalk rejection in parallel optical coherence tomography using spatially incoherent illumination with partially coherent sources.Optics Letters, vol. 35, no. 13, July 2010, pp. 2305–07. Epmc, doi:10.1364/ol.35.002305.
Journal cover image

Published In

Optics letters

DOI

EISSN

1539-4794

ISSN

0146-9592

Publication Date

July 2010

Volume

35

Issue

13

Start / End Page

2305 / 2307

Related Subject Headings

  • Tomography, Optical Coherence
  • Time Factors
  • Scattering, Radiation
  • Optics
  • Lighting
  • Drosophila melanogaster
  • Artifacts
  • Animals
  • 5102 Atomic, molecular and optical physics
  • 4009 Electronics, sensors and digital hardware