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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 42, Iss. 19 — Jul. 1, 2003
  • pp: 3795–3799

Long-optical-path scanning mechanism for optical coherence tomography

Tatsuo Shiina, Yohei Moritani, Masafumi Ito, and Yasuyuki Okamura  »View Author Affiliations


Applied Optics, Vol. 42, Issue 19, pp. 3795-3799 (2003)
http://dx.doi.org/10.1364/AO.42.003795


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Abstract

A new scanning mechanism for changing long optical paths is proposed. This mechanism consists of corner reflectors arranged equally upon a disk and an outer mirror. Rotating the 120-mmϕ disk cases a long-optical-path change in each reflector with a near linearity of more than 40 mm. An optical coherence tomography system is described that confirms the usefulness of the proposed mechanism. Its operating characteristics and accuracy are evaluated by analysis and experiment. The deviation of the optical-path change is less than 1.52% at a reflector rotation angle of ±10°. A high-speed lock-in amplifier is utilized for fundamental measurements of glass samples.

© 2003 Optical Society of America

OCIS Codes
(110.4500) Imaging systems : Optical coherence tomography
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5800) Instrumentation, measurement, and metrology : Scanners
(220.4830) Optical design and fabrication : Systems design

History
Original Manuscript: June 6, 2002
Revised Manuscript: January 8, 2003
Published: July 1, 2003

Citation
Tatsuo Shiina, Yohei Moritani, Masafumi Ito, and Yasuyuki Okamura, "Long-optical-path scanning mechanism for optical coherence tomography," Appl. Opt. 42, 3795-3799 (2003)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-42-19-3795


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