OFDR with an SSG-DBR laser

Takuji Amano; Hideaki Hiro-Oka; DongHak Choi; Hiroyuki Furukawa; Fumiyoshi Kano; Mitsuo Takeda; Motoi Nakanishi; Kimiya Shimizu; Kohji Obayashi

doi:10.1117/12.559120

2 August 2004 OFDR with an SSG-DBR laser

Takuji Amano, Hideaki Hiro-Oka, DongHak Choi, Hiroyuki Furukawa, Fumiyoshi Kano, Mitsuo Takeda, Motoi Nakanishi, Kimiya Shimizu, Kohji Obayashi

Author Affiliations +

Proceedings Volume 5531, Interferometry XII: Techniques and Analysis; (2004) https://doi.org/10.1117/12.559120
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

Recently, frequency-domain (FD) -optical-coherence-tomography (OCT) methods have been investigated extensively as more efficient and sensitive system compared with conventional time-domain (TD) -OCT. Superstructure-grating-distributed-Bragg-reflector (SSG-DBR) lasers are particularly suited for optical-frequency-domain-reflectometry (OFDR) -OCT with its wide wavelength tunability and frequency agility. We have made a discrete frequency OFDR-OCT system with an SSG-DBR laser, which can tune the wavelength from 1533 to 1574 nm with tuning speed of 10μs per 0.1 nm step. The theoretical expression of the discrete frequency OFDR-OCT is given. Utilizing near-transparent nature of enamel of teeth in the wavelength region of the SSG-DBR laser and long object range of the OFDR-OCT, we have carried out OCT measurements on teeth. Experimental OCT imaging of a canine are reported here.

Citation Download Citation

Takuji Amano, Hideaki Hiro-Oka, DongHak Choi, Hiroyuki Furukawa, Fumiyoshi Kano, Mitsuo Takeda, Motoi Nakanishi, Kimiya Shimizu, and Kohji Obayashi "OFDR with an SSG-DBR laser", Proc. SPIE 5531, Interferometry XII: Techniques and Analysis, (2 August 2004); https://doi.org/10.1117/12.559120

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