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Proceedings Article

A 5mm catheter for constant resolution probing in Fourier domain optical coherence endoscopy

[+] Author Affiliations
Kye-Sung Lee, Jannick P. Rolland

College of Optics and Photonics, Univ. of Central Florida

Lei Wu, Huikai Xie

Univ. of Florida

Olusegun Ilegbusi

Univ. of Central Florida

Marco Costa

Univ. of Florida Health Sciences Ctr., Shands Hospital

Proc. SPIE 6432, Endoscopic Microscopy II, 64320B (February 8, 2007); doi:10.1117/12.711122
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From Conference Volume 6432

  • Endoscopic Microscopy II
  • Guillermo J. Tearney; Thomas D. Wang
  • San Jose, CA | January 20, 2007

abstract

A 5mm biophotonic catheter was conceived for optical coherence tomography (OCT) with collimation optics, an axicon lens, and custom design imaging optics, yielding a 360 degree scan aimed at imaging within concave structures such as lung lobes. In OCT a large depth of focus is necessary to image a thick sample with a constant high transverse resolution. There are two approaches to achieving constant lateral resolution in OCT: Dynamic focusing or Bessel beam forming. This paper focuses on imaging with Bessel beams. A Bessel beam can be generated in the sample arm of the OCT interferometer when axicon optics is employed instead of a conventional focusing lens. We present a design for a 5mm catheter that combines an axicon lens with imaging optics and the coupling of a MEMS mirror attached to a micromotor that allow 360 degree scanning with a resolution of about 5 microns across a depth of focus of about 1.2mm.

© (2007) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Kye-Sung Lee ; Lei Wu ; Huikai Xie ; Olusegun Ilegbusi ; Marco Costa, et al.
"A 5mm catheter for constant resolution probing in Fourier domain optical coherence endoscopy", Proc. SPIE 6432, Endoscopic Microscopy II, 64320B (February 8, 2007); doi:10.1117/12.711122; http://dx.doi.org/10.1117/12.711122


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