Two-dimensional scanning probe driven by a solenoid-based single actuator for optical coherence tomography

Abstract

We propose the two-dimensional scanning probe operating with a single actuator, which is thought useful as a sample probe for optical coherence tomography (OCT). The probe was designed to use a single-body lensed fiber cantilever loaded with an iron-bead and driven by a single-solenoid actuator. Elliptic spiral trace patterns were achieved using off-axis magnetic fields of the solenoid. A three-dimensional OCT image was obtained for a scanning area of $3.8\mathrm{mm}\times 3.4\mathrm{mm}$ at an acquisition speed of 16.7 s/V. Up to $27\mathrm{Hz}$ B-scan rate, the proposed probe worked well, and 1000 A-scans were made per each B-scan.

© 2011 Optical Society of America

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