Rapid-scanning forward-imaging miniature endoscope for real-time optical coherence tomography

Xiumei Liu, Michael J. Cobb, Yuchuan Chen, Michael B. Kimmey, Xingde Li

Research output: Contribution to journalArticlepeer-review

192 Scopus citations


We developed a miniature endoscope that is capable of rapid lateral scanning and is suitable for real-time forward-imaging optical coherence tomography (OCT). The endoscope has an outer diameter of 2.4 mm, consisting of a miniature tubular lead zirconate titanate (PZT) actuator, a single-mode fiber-optic cantilever, and a graded-index lens. Rapid lateral scanning at 2.8 kHz is achieved when the fiber-optic cantilever is resonated with the PZT actuator. This allows OCT imaging to be performed by fast lateral beam scanning followed by slow depth scanning, which is different from the conventional OCT imaging sequence. Real-time OCT imaging with the endoscope operated is the new image acquisition sequence at 6 frames/s is demonstrated.

Original languageEnglish (US)
Pages (from-to)1763-1765
Number of pages3
JournalOptics Letters
Issue number15
StatePublished - Aug 1 2004
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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