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

Hideo Kakuma; DongHak Choi; Hiroyuki Furukawa; Hideaki Hiro-Oka; Kohji Ohbayashi

doi:10.1117/12.807235

18 February 2009 24 mm depth range discretely swept optical frequency domain imaging in dentistry

Hideo Kakuma, DongHak Choi, Hiroyuki Furukawa, Hideaki Hiro-Oka, Kohji Ohbayashi

Proceedings Volume 7162, Lasers in Dentistry XV; 716208 (2009) https://doi.org/10.1117/12.807235
Event: SPIE BiOS, 2009, San Jose, California, United States

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.

Citation Download Citation

Hideo Kakuma, DongHak Choi, Hiroyuki Furukawa, Hideaki Hiro-Oka, and Kohji Ohbayashi "24 mm depth range discretely swept optical frequency domain imaging in dentistry", Proc. SPIE 7162, Lasers in Dentistry XV, 716208 (18 February 2009); https://doi.org/10.1117/12.807235

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