Gas-cell referenced swept source phase sensitive optical coherence tomography

Roman V. Kuranov, Austin B. McElroy, Nate Kemp, Stepan Baranov, Joe Taber, Marc D. Feldman, Thomas E. Milner

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


Distinct reference and signal interferometers in combination with a gas-cell spectral reference are employed to increase sensitivity and environmental stability of a swept source phase-sensitive optical coherence tomography. A displacement sensitivity (DS) of 65 pm at 280- μm depth and DS degradation with depth of 0.0015 rad/mm is achieved. Differential DS of 234 pm in a 127-μm-thick scattering phantom is six-fold superior to previously reported values. DS degradation with a depth of 0.026 rad/mm is reported for tissue-like scattering phantoms. Measured depth-dependent DS suggests that digitization time jitter noise contributes to degradation of phase sensitivity with depth.

Original languageEnglish (US)
Article number5498950
Pages (from-to)1524-1526
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number20
StatePublished - 2010


  • Biomedical optical imaging
  • optical coherence tomography (OCT)
  • phase measurements

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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