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Journal of Biomedical Optics • Open Access

Fiber-optic raster scanning two-photon endomicroscope using a tubular piezoelectric actuator
Author(s): Dukho Do; Hongki Yoo; Dae-Gab Gweon

Paper Abstract

A nonresonant, fiber-optic raster scanning endomicroscope was developed using a quarter-tubular piezoelectric (PZT) actuator. A fiber lever mechanism was utilized to enhance the small actuation range of the tubular PZT actuator and to increase its field-of-view. Finite element method simulation of the endoscopic probe was conducted for various conditions to maximize its scanning range. After fabricating the probe using a double clad fiber, we obtained two-photon fluorescence images using raster beam scanning of the fiber. The outer diameter of the probe was 3.5 mm and its rigid distal length was 30 mm including a high numerical aperture gradient index lens. These features are sufficient for input into the instrumental channel of a commercial colonoscope or gastroscope to obtain high resolution images <italic<in vivo</italic<.

Paper Details

Date Published: 27 June 2014
PDF: 6 pages
J. Biomed. Opt. 19(6) 066010 doi: 10.1117/1.JBO.19.6.066010
Published in: Journal of Biomedical Optics Volume 19, Issue 6
Show Author Affiliations
Dukho Do, KAIST (Korea, Republic of)
Hongki Yoo, Hanyang Univ. (Korea, Republic of)
Dae-Gab Gweon, KAIST (Korea, Republic of)


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