Title

A 5Mm Catheter For Constant Resolution Probing In Fourier Domain Optical Coherence Endoscopy

Keywords

Axicon lens; Fourier-domain optical coherence tomography; Optical coherence tomography

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.

Publication Date

4-30-2007

Publication Title

Progress in Biomedical Optics and Imaging - Proceedings of SPIE

Volume

6432

Number of Pages

-

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.711122

Socpus ID

34247365992 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/34247365992

This document is currently not available here.

Share

COinS