Optical imaging of hard and soft dental tissues using discretely swept OFDR-OCT

Hideo Kakuma; Kohji Ohbayashi; Yasuhiko Arakawa

doi:10.1117/12.699897

8 March 2007 Optical imaging of hard and soft dental tissues using discretely swept OFDR-OCT

Hideo Kakuma, Kohji Ohbayashi, Yasuhiko Arakawa

Proceedings Volume 6425, Lasers in Dentistry XIII; 642505 (2007) https://doi.org/10.1117/12.699897
Event: SPIE BiOS, 2007, San Jose, California, United States

Abstract

We have been developing a unique optical frequency domain reflectometry (OFDR)-OCT based on Mach-Zehnder interferometer using a discretly swept superstructure-grating distributed Bragg- reflector (SSG-DBR) lasers developed for telecommunication field. Our previous measurements at C-band wavelength (1529 to 1568 nm) revealed good quality of data. In this work, we extend measurements with a L-band (1560 to 1600 nm) SSG-DBR source at faster scanning speed of 0.5 &mgr;s/step compared with former 10 &mgr;s/step. In spite of the faster scanning, we can observe better quality of OCT images of hard and soft dental tissues in-vitro and in-vivo measurements.

Citation Download Citation

Hideo Kakuma, Kohji Ohbayashi, and Yasuhiko Arakawa "Optical imaging of hard and soft dental tissues using discretely swept OFDR-OCT", Proc. SPIE 6425, Lasers in Dentistry XIII, 642505 (8 March 2007); https://doi.org/10.1117/12.699897

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