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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 1, Iss. 6 — Jun. 13, 2006

Doppler optical coherence tomography with a micro-electro-mechanical membrane mirror for high-speed dynamic focus tracking

Victor X. D. Yang, Youxin Mao, Beau A. Standish, Nigel R. Munce, Stephanie Chiu, Daina Burnes, Brian C. Wilson, I. Alex Vitkin, Phillip A. Himmer, and David L. Dickensheets  »View Author Affiliations


Optics Letters, Vol. 31, Issue 9, pp. 1262-1264 (2006)
http://dx.doi.org/10.1364/OL.31.001262


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Abstract

An elliptical microelectromechanical system (MEMS) membrane mirror is electrostatically actuated to dynamically adjust the optical beam focus and track the axial scanning of the coherence gate in a Doppler optical coherence tomography (DOCT) system at 8 kHz . The MEMS mirror is designed to maintain a constant numerical aperture of 0.13 and a spot size of 6.7 μ m over an imaging depth of 1 mm in water, which improves imaging performance in resolving microspheres in gel samples and Doppler shift estimation precision in a flow phantom. The mirror’s small size ( 1.4 mm × 1 mm ) will allow integration with endoscopic MEMS-DOCT for in vivo applications.

© 2006 Optical Society of America

OCIS Codes
(170.3340) Medical optics and biotechnology : Laser Doppler velocimetry
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(170.3890) Medical optics and biotechnology : Medical optics instrumentation
(170.4500) Medical optics and biotechnology : Optical coherence tomography
(170.4580) Medical optics and biotechnology : Optical diagnostics for medicine
(170.7050) Medical optics and biotechnology : Turbid media

ToC Category:
Medical Optics and Biotechnology

History
Original Manuscript: October 17, 2005
Revised Manuscript: January 15, 2006
Manuscript Accepted: February 2, 2006

Virtual Issues
Vol. 1, Iss. 6 Virtual Journal for Biomedical Optics

Citation
Victor X. D. Yang, Youxin Mao, Beau A. Standish, Nigel R. Munce, Stephanie Chiu, Daina Burnes, Brian C. Wilson, I. Alex Vitkin, Phillip A. Himmer, and David L. Dickensheets, "Doppler optical coherence tomography with a micro-electro-mechanical membrane mirror for high-speed dynamic focus tracking," Opt. Lett. 31, 1262-1264 (2006)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-31-9-1262


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