摘要
提出一种基于正弦相位调制的频域光学相干层析成像,利用正弦相位调制干涉术探测复频域干涉条纹的实部和虚部,重建复频域干涉条纹。对该复频域干涉条纹作逆傅里叶变换后,消除了频域光学相干层析成像中存在的复共轭镜像以及直流背景和自相干噪声。对玻璃片样品进行了层析成像实验。实验结果表明,采用正弦相位调制的频域光学相干层析成像,将可利用的成像深度范围扩大到原来的2倍,实现了全深度探测的频域光学相干层析成像。
A Fourier-domain optical coherence tomography based on sinusoidal phase modulation is presented. The complex Fourier domain interference fringe is reconstructed by detecting its real and imaginary components by sinusoidal phase modulating interferometry. After inverse Fourier transform of complex interference fringes, the complex conjugate mirror images, direct current background and self-coherent noise in the Fourier-domain optical coherence tomography are eliminated. The tomographic experiment on glass sample is carried out. The result indicates that the range of imaging depth is doubled, and the Fourier domain optical coherence tomography for fulldepth detection is realized.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2007年第8期1470-1474,共5页
Acta Optica Sinica
基金
国家自然科学基金(60578051)
上海市科委国际合作计划项目(051107085)资助课题
关键词
医用光学与生物技术
频域光学相干层析术
正弦相位调制
全深度探测
medical optics and biotechnology
Fourier-domain optical coherence tomography
sinusoidal phase modulation
full-depth probing