Diffractive catheter for ultrahigh-resolution spectraldomain volumetric OCT imaging

Jiefeng Xi, Anqi Zhang, Zhenyu Liu, Wenxuan Liang, Lih Y. Lin, Shaoyong Yu, Xingde Li

Research output: Contribution to journalArticlepeer-review


We present a novel design for an endoscopic imaging catheter utilizing diffractive optics for ultrahigh-resolution optical coherence tomography (OCT) imaging at 800 nm. A diffractive microlens was developed to alleviate severe chromatic aberration when a broadband light source was employed at the 800 nm wavelength range. Combined with a home-built fiber rotary joint and a broadband Ti:sapphire laser, the imaging catheter achieved a lateral resolution of 6.2 μm and an axial resolution of 3.0 μm in air. The performance of the catheter was demonstrated by three-dimensional full-circumferential endoscopic OCT imaging of guinea pig esophagus in vivo.

Original languageEnglish (US)
Pages (from-to)2016-2019
Number of pages4
JournalOptics Letters
Issue number7
StatePublished - Apr 1 2014
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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