Dynamic full-range Fourier-domain optical coherence tomography using sinusoidal phase-modulating interferometry

被引：5
作者：
Bu, Peng [1 ]
Wang, Xiangzhao [1 ]
Sasaki, Osami [2 ]
机构：
[1] Acad Sinica, Shanghai Inst Opt & Fine Mech, Informat Opt Lab, Shanghai 201800, Peoples R China
[2] Niigata Univ, Fac Engn, Niigata 9502181, Japan
来源：
OPTICAL ENGINEERING | 2007年 / 46卷 / 10期
基金：
中国国家自然科学基金;
关键词：
optical coherence tomography; interferometry; sinusoidal phase modulation;
D O I：
10.1117/1.2798540
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We propose a technique for dynamic full-range Fourier-domain optical coherence tomography by using sinusoidal phase-modulating interferometry, where both the full-range structural information and depth-resolved dynamic information are obtained. A novel frequency-domain filtering algorithm is proposed to reconstruct a time-dependent complex spectral interferogram from the sinusoidally phase-modulated interferogram detected with a high-rate CCD camera. By taking the amplitude and phase of the inverse Fourier transform of the complex spectral interferogram, a time-dependent full-range cross-sectional image and depth-resolved displacement are obtained. Displacement of a sinusoidally vibrating glass cover slip behind a fixed glass cover slip is measured with subwavelength sensitivity to demonstrate the depth-resolved dynamic imaging capability of our system. (c) 2007 Society of Photo-Optical Instrumentation Engineers.
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页数：4
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