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Proceedings Paper

24 mm depth range discretely swept optical frequency domain imaging in dentistry
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Paper Abstract

A large depth range is needed if optical coherence tomography (OCT) is to be used to observe multiple teeth simultaneously. A discretely swept optical frequency domain imaging system with a 24-mm depth range was made by using a superstructure-grating distributed Bragg reflector (SSG-DBR) laser as the light source and setting the frequencystep interval to be 3.13 GHz (λ ≈ 0.026 nm). The swept wavelength range was 40 nm centered at 1580 nm, the resolution was 29 μm, and the A-scan rate was 1.3 kHz. Application of the OCT system to a dental phantom was demonstrated.

Paper Details

Date Published: 18 February 2009
PDF: 8 pages
Proc. SPIE 7162, Lasers in Dentistry XV, 716208 (18 February 2009); doi: 10.1117/12.807235
Show Author Affiliations
Hideo Kakuma, Yoshida Dental Mfg. Co., Ltd. (Japan)
DongHak Choi, Kitasato Univ. (Japan)
Hiroyuki Furukawa, Kitasato Univ. (Japan)
Hideaki Hiro-Oka, Kitasato Univ. (Japan)
Kohji Ohbayashi, Kitasato Univ. (Japan)

Published in SPIE Proceedings Vol. 7162:
Lasers in Dentistry XV
Peter Rechmann; Daniel Fried, Editor(s)

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