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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 2 — Jan. 15, 2014
  • pp: 186–188

Compact piezoelectric transducer fiber scanning probe for optical coherence tomography

Ning Zhang, Tsung-Han Tsai, Osman O. Ahsen, Kaicheng Liang, Hsiang-Chieh Lee, Ping Xue, Xingde Li, and James G. Fujimoto  »View Author Affiliations


Optics Letters, Vol. 39, Issue 2, pp. 186-188 (2014)
http://dx.doi.org/10.1364/OL.39.000186


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Abstract

We developed a compact, optical fiber scanning piezoelectric transducer (PZT) probe for endoscopic and minimally invasive optical coherence tomography (OCT). Compared with previous forward-mount fiber designs, we present a reverse-mount design that achieves a shorter rigid length. The fiber was mounted at the proximal end of a quadruple PZT tube and scanned inside the hollow PZT tube to reduce the probe length. The fiber resonant frequency was 338 Hz using a 17-mm-long fiber. A 0.9 mm fiber deflection was achieved with a driving amplitude of 35 V. Using a GRIN lens-based optical design with a 1.3× magnification, a 6μm spot was scanned over a 1.2 mm diameter field. The probe was encased in a metal hypodermic tube with a 25mm rigid length and covered with a 3.2 mm outer diameter (OD) plastic sheath. Imaging was performed with a swept source OCT system based on a Fourier domain modelocked laser (FDML) light source at a 240 kHz axial scan rate and 8 μm axial resolution (in air). En face OCT imaging of skin in vivo and human colon ex vivo was demonstrated.

© 2014 Optical Society of America

OCIS Codes
(120.5800) Instrumentation, measurement, and metrology : Scanners
(170.2150) Medical optics and biotechnology : Endoscopic imaging
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(170.4500) Medical optics and biotechnology : Optical coherence tomography

ToC Category:
Medical Optics and Biotechnology

History
Original Manuscript: August 20, 2013
Manuscript Accepted: October 14, 2013
Published: January 3, 2014

Virtual Issues
Vol. 9, Iss. 3 Virtual Journal for Biomedical Optics

Citation
Ning Zhang, Tsung-Han Tsai, Osman O. Ahsen, Kaicheng Liang, Hsiang-Chieh Lee, Ping Xue, Xingde Li, and James G. Fujimoto, "Compact piezoelectric transducer fiber scanning probe for optical coherence tomography," Opt. Lett. 39, 186-188 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-2-186

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