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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 8 — Apr. 16, 2007
  • pp: 5208–5217

Axial-lateral parallel time domain OCT with an optical zoom lens and high order diffracted lights for variable imaging range

Yuuki Watanabe, Yasutoki. Takasugi, Kazuhiko Yamada, and Manabu Sato  »View Author Affiliations

Optics Express, Vol. 15, Issue 8, pp. 5208-5217 (2007)

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We developed a method to adjust measurement range within axial–lateral parallel time-domain optical coherence tomography (ALP TD-OCT) using an optical zoom lens and high-order diffracted lights. A two-dimensional (2-D) camera can produce a depth-resolved interference image using diffracted light as the reference beam and a linear illumination beam without axial and lateral scans. The lateral range can be varied continuously from 4 to 8 mm using an optical zoom lens. Axial range could be adjusted discretely by 1st, 2nd, 3rd, and 4th orders because we used a reflective diffraction grating with 300 lines/mm in a 1.3 μm wavelength region. OCT images (320 × 256 pixels) can be displayed at 30 frames per second (fps) by calculating two interference images, captured by an InGaAs camera operated at 60 fps. With a 1.05-ms exposure, the ALP TD-OCT system has sufficient sensitivity (94.6 dB) to image the human finger in vivo.

© 2007 Optical Society of America

OCIS Codes
(110.4500) Imaging systems : Optical coherence tomography
(120.3180) Instrumentation, measurement, and metrology : Interferometry

ToC Category:
Imaging Systems

Original Manuscript: February 13, 2007
Revised Manuscript: April 9, 2007
Manuscript Accepted: April 11, 2007
Published: April 13, 2007

Virtual Issues
Vol. 2, Iss. 5 Virtual Journal for Biomedical Optics

Yuuki Watanabe, Yasutoki. Takasugi, Kazuhiko Yamada, and Manabu Sato, "Axial-lateral parallel time domain OCT with optical zoom lens and high order diffracted lights for variable imaging range," Opt. Express 15, 5208-5217 (2007)

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