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Proceedings Article

2mm catheter design for endoscopic optical coherence tomography

[+] Author Affiliations
Kye-Sung Lee, Chuck Koehler, Eric G. Johnson, Jannick P. Rolland

CREOL, College of Optics and Photonics, Univ. of Central Florida

Eric Valaski Teuma, Olusegun Ilegbusi

Univ. of Central Florida

Marco Costa

Univ. of Florida Health Science Ctr., Shands Hospital

Huikai Xie

Univ. of Florida

Proc. SPIE 6342, International Optical Design Conference 2006, 63420F (July 22, 2006); doi:10.1117/12.692203
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From Conference Volume 6342

  • International Optical Design Conference 2006
  • G. Groot Gregory; Joseph M. Howard; R. John Koshel
  • Vancouver, BC, Canada | June 04, 2006

abstract

A biophotonics catheter was conceived with collimation optics, an axicon lens, and custom design imaging optics yielding a 360 degree scan aimed at imaging within concave structures such as arteries and lung lobes. The large depth of focus is necessary to image a long-depth-range sample with constant transverse resolution in optical coherence tomography (OCT). There are two approaches to achieving constant invariant resolution in OCT: Dynamic focusing or Bessel beam formation. This paper focuses on imaging with Bessel beams. The Bessel beams may be created with axicon optics which can be used instead of a conventional focusing lens in the sample arm of the OCT interferometer. In this paper we present the design of a 2mm catheter for optical coherence endoscopy with resolution of about 5 micron across a depth of focus of about 1.6mm. Importantly, we investigated the fabrication of a 800μm diameter axicon lens and the associated lateral resolution obtained over a long depth range in our OCT system, compared to the same OCT system using a conventional lens.

© (2006) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Kye-Sung Lee ; Chuck Koehler ; Eric G. Johnson ; Eric Valaski Teuma ; Olusegun Ilegbusi, et al.
"2mm catheter design for endoscopic optical coherence tomography", Proc. SPIE 6342, International Optical Design Conference 2006, 63420F (July 22, 2006); doi:10.1117/12.692203; http://dx.doi.org/10.1117/12.692203


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