Quasi-simultaneous OCT en-face imaging with two different depth resolutions

Adrian Gh Podoleanu, Radu G. Cucu, Richard B. Rosen, George M. Dobre, John A. Rogers, David A. Jackson

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


We report a system capable of acquiring two quasi-simultaneous en-face optical coherence tomography (OCT) images of different depth resolution (one better than 20 μm and the other between 80 and 330 μm) at a frame rate of 2 Hz. The larger depth resolution image makes it ideal for target positioning in the OCT imaging of moving organs, such as eye fundus and cornea, as well as in the alignment of stacks of en-face OCT images. This role is similar to that of the confocal channel in a previously reported dual channel OCT/confocal imaging instrument. The system presented operates as a dual channel imaging instrument, where both channels operate on the OCT principle. We illustrate the functionality of the system with examples from a coin, skin from a finger and optic nerve in vivo.

Original languageEnglish
Pages (from-to)1696-1702
Number of pages7
JournalJournal of Physics D: Applied Physics
Issue number14
StatePublished - 21 Jul 2003


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