Deep imaging with 1.3 µm dual-axis optical coherence tomography and an enhanced depth of focus.

Journal Article (Journal Article)

For many clinical applications, such as dermatology, optical coherence tomography (OCT) suffers from limited penetration depth due primarily to the highly scattering nature of biological tissues. Here, we present a novel implementation of dual-axis optical coherence tomography (DA-OCT) that offers improved depth penetration in skin imaging at 1.3 µm compared to conventional OCT. Several unique aspects of DA-OCT are examined here, including the requirements for scattering properties to realize the improvement and the limited depth of focus (DOF) inherent to the technique. To overcome this limitation, our approach uses a tunable lens to coordinate focal plane selection with image acquisition to create an enhanced DOF for DA-OCT. This improvement in penetration depth is quantified experimentally against conventional on-axis OCT using tissue phantoms and mouse skin. The results presented here suggest the potential use of DA-OCT in situations where a high degree of scattering limits depth penetration in OCT imaging.

Full Text

Duke Authors

Cited Authors

  • Jelly, ET; Zhao, Y; Chu, KK; Price, H; Crose, M; Steelman, ZA; Wax, A

Published Date

  • December 2021

Published In

Volume / Issue

  • 12 / 12

Start / End Page

  • 7689 - 7702

PubMed ID

  • 35003860

Pubmed Central ID

  • PMC8713684

Electronic International Standard Serial Number (EISSN)

  • 2156-7085

International Standard Serial Number (ISSN)

  • 2156-7085

Digital Object Identifier (DOI)

  • 10.1364/boe.438621


  • eng