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Proceedings Paper

2mm catheter design for endoscopic optical coherence tomography
Author(s): Kye-Sung Lee; Chuck Koehler; Eric G. Johnson; Eric Valaski Teuma; Olusegun Ilegbusi; Marco Costa; Huikai Xie; Jannick P. Rolland
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Paper 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.

Paper Details

Date Published: 22 July 2006
PDF: 9 pages
Proc. SPIE 6342, International Optical Design Conference 2006, 63420F (22 July 2006); doi: 10.1117/12.692203
Show Author Affiliations
Kye-Sung Lee, CREOL, College of Optics and Photonics, Univ. of Central Florida (United States)
Chuck Koehler, CREOL, College of Optics and Photonics, Univ. of Central Florida (United States)
Eric G. Johnson, CREOL, College of Optics and Photonics, Univ. of Central Florida (United States)
Eric Valaski Teuma, Univ. of Central Florida (United States)
Olusegun Ilegbusi, Univ. of Central Florida (United States)
Marco Costa, Univ. of Florida Health Science Ctr., Shands Hospital (United States)
Huikai Xie, Univ. of Florida (United States)
Jannick P. Rolland, CREOL, College of Optics and Photonics, Univ. of Central Florida (United States)


Published in SPIE Proceedings Vol. 6342:
International Optical Design Conference 2006
G. Groot Gregory; Joseph M. Howard; R. John Koshel, Editor(s)

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