Speckle noise reduction by averaging in polarization sensitive spectral domain optical coherence tomography

Erich Götzinger; Michael Pircher; B. Baumann; Tillman Schmoll; Harald Sattmann; Rainer A. Leitgeb; Christoph K. Hitzenberger

doi:10.1117/12.889623

6 June 2011 Speckle noise reduction by averaging in polarization sensitive spectral domain optical coherence tomography

Erich Götzinger, Michael Pircher, B. Baumann, Tillman Schmoll, Harald Sattmann, Rainer A. Leitgeb, Christoph K. Hitzenberger

Author Affiliations +

Proceedings Volume 8091, Optical Coherence Tomography and Coherence Techniques V; 80910A (2011) https://doi.org/10.1117/12.889623
Event: European Conferences on Biomedical Optics, 2011, Munich, Germany

Abstract

We demonstrate an ultra high speed fiber based polarization sensitive spectral domain optical coherence tomography system, using two ultra high speed CMOS line scan cameras. With this system an A-scan rate of up to 128 kHz was achieved. The system is based on polarization maintaining fibers and retrieves the backscattered intensity, retardation and optic axis orientation with only one A-scan per measurement location. This high speed data acquisition enables averaging of several acquired B-scans of intensity, retardation, optic axis orientation, and Stokes vectors, which strongly reduces speckle noise. We discuss different averaging techniques and compare the results in healthy human retinas.

Citation Download Citation

Erich Götzinger, Michael Pircher, B. Baumann, Tillman Schmoll, Harald Sattmann, Rainer A. Leitgeb, and Christoph K. Hitzenberger "Speckle noise reduction by averaging in polarization sensitive spectral domain optical coherence tomography", Proc. SPIE 8091, Optical Coherence Tomography and Coherence Techniques V, 80910A (6 June 2011); https://doi.org/10.1117/12.889623

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KEYWORDS

Optical coherence tomography

Polarization

Speckle

Denoising

Image quality

Imaging systems

Retina

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