Estimation and compensation of phase errors induced by axial bulk motion of a sample in wavelength-sweeping parallel Fourier domain OCT

We report a new, to the best of our knowledge, approach to correct image blurring due to the axial bulk motion of a sample in wavelength-sweeping Fourier domain parallel optical coherence tomography (OCT). This approach can estimate phase errors changing rapidly in time through direct measurements o...

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Bibliographic Details
Published in:Optics letters 2020-06, Vol.45 (12), p.3200-3203
Main Authors: Lee, Kye-Sung, Hur, Hwan, Kim, I. Jong, Kim, Dong Uk, Bae, Ji Yong, Je, Soonkyu, Chang, Ki Soo
Format: Article
Language:English
Subjects:
Algorithms
Blurring
Bulk sampling
Domains
Line spectra
Optical Coherence Tomography
Sweeping
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Summary:We report a new, to the best of our knowledge, approach to correct image blurring due to the axial bulk motion of a sample in wavelength-sweeping Fourier domain parallel optical coherence tomography (OCT). This approach can estimate phase errors changing rapidly in time through direct measurements of the apparent axial shift during the sampling interval using common phase changes in parallel detection without additional hardware. To demonstrate the performance of the proposed algorithm, a single reflection and scattering sample were imaged with wavelength-sweeping parallel OCT implemented by scanning a spectrally dispersed line-field along the line direction. In addition, we quantitatively demonstrated that even a small axial movement of the sample could cause serious image blur at a high nonlinear degree of movement.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.391060