OFDR with an SSG-DBR laser
OFDR with an SSG-DBR laser
复制标题
使用 SSG-DBR 激光器的 OFDR
DOI：
10.1117/12.559120
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
Kohji Obayashi
中科院分区：
文献类型：
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作者：
T. Amano;H. Hiro;D. Choi;H. Furukawa;F. Kano;M. Takeda;M. Nakanishi;K. Shimizu;Kohji Obayashi
近年来，频域光学相干层析成像（optical-coherence-tomography，OCT）技术作为一种比传统时域OCT更高效、灵敏的光学成像系统得到了广泛的研究。超结构光栅分布布拉格反射器（Superstructure-grating-distributed-Bragg-reflector，SSG-DBR）激光器具有宽波长调谐和频率捷变的特点，特别适合用于光学频域反射OCT。我们用SSG-DBR激光器制作了一个离散频率OFDR-OCT系统，该系统可以在1533 ~ 1574 nm波长范围内进行调谐，调谐速度为10μs/0.1 nm。给出了离散频率OFDR-OCT的理论表达式。利用牙釉质在SSG-DBR激光器波长范围内的近透明性质和OFDR-OCT的长目标范围，我们对牙齿进行了OCT测量。本文报告了一只犬的实验OCT成像。
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.