Optical coherence tomography (OCT) is a recently developed high resolution biomedical imaging method. Fast scanning speed and miniature probe is benefit for clinical applications of OCT. In this paper we present a method to realize fast lateral scanning with two-dimensional (2D) resonant scanning pattern. By driving a fiber cantilever with a bimorph actuator near its resonance, the planar motion of the fiber cantilever may develop to an elliptical motion due to nonlinear coupling with longitudinal inertia. This effect can be exploited to form 2D scanning pattern. Basic principle relevant to realization of 2D scanning pattern of the fiber cantilever scanner by 1D actuator, as well as confirming experimental results are presented. Future work and system configuration on implementing this fiber cantilever scanner in the sample arm of a fiber-based OCT system is proposed.

Date Published: 1 May 2007
PDF: 8 pages
Proc. SPIE 6534, Fifth International Conference on Photonics and Imaging in Biology and Medicine, 65340I (1 May 2007); doi: 10.1117/12.741140

Published in SPIE Proceedings Vol. 6534:
Fifth International Conference on Photonics and Imaging in Biology and Medicine
Qingming Luo; Lihong V. Wang; Valery V. Tuchin; Min Gu, Editor(s)