西安交通大学机械制造系统工程国家重点实验室,西安,710049
网络首发:2008-07-10,
纸质出版:2008
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陈玉平, 赵宏, 杨琦, 等. 谱域光学相干层析成像系统的实验研究[J]. 西安交通大学学报, 2008,42(7):815-817+912.
陈玉平, 赵宏, 杨琦, et al. Experiment Research on Spectral-Domain Optical Coherence Tomography[J]. 2008, 42(7): 815-817+912.
为改善光学相干层析成像(OCT)技术图像的获取速度和灵敏度
搭建了一套基于光谱干涉法的谱域光学相干层析成像系统(SD-OCT).该系统采用宽带光源照明
通过光纤迈克尔逊干涉仪产生物体的干涉图形并被光谱仪采集
物体内部结构图像则由干涉图形的傅里叶变换获得.研究表明
SD-OCT的数据获取速度比传统的OCT系统提高了将近40倍
达到了16 000/s的轴向扫描速率
其灵敏度也改善了20~30 dB.因此
SD-OCT 可实现工程和生物材料内部结构的实时三维图像重构.
To improve the image acquisition rate and sensitivity of optical coherence tomography(OCT)technique
a spectral-domain optical coherence tomography(SD-OCT)system based on a spectral interferometric is constructed
where a broadband light source is chosen as the illumination source and a Michelson fiber interferometer is employed to generate interference pattern of object collected by a spectrometer. The object inner structure is obtained from the interference pattern by a Fourier transform. It is theoretically stated and experimentally verified that SD-OCT system outperforms the conventional OCT system in acquisition rate and sensitivity. The acquisition rate gets 16 000 axial scans per second and 40 times the conventional OCT; the sensitivity is enhanced by 20-30 dB. As a result
the SD-OCT system enables to realize near real time three dimensional imaging reconstructions of internal structure of engineering and biological materials.
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