| Parallel Spectral-Domain Optical Coherence Tomography for Non-Scattering Object Imaging |
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| 作者姓名： | 李刚 任钊 吴开杰 张泰石 林凌 |
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| 作者单位： | School of Precision Instrument and Opto-Electronics Engineering Tianjin University，School of Precision Instrument and Opto-Electronics Engineering Tianjin University，Institute for Laser Medicine and Bio-Photonics Shanghai Jiaotong University，School of Precision Instrument and Opto-Electronics Engineering Tianjin University，School of Precision Instrument and Opto-Electronics Engineering Tianjin University，Tianjin 300072 China，Tianjin 300072 China，Shanghai 200240 China，Tianjin 300072 China，Tianjin 300072 China |
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| 摘 要： | The parallel spectral-domain optical coherence tomography(PSDOCT) is described for high-speed optical coherence tomography(OCT) without lateral scanning. In this setup, the self-elimination of auto-correlation(AC) interference algorithm was used for eradicating the AC interference and ghost images. However, when performed in free space OCT, this algorithm still generated a weak DC component. The algorithm was improved by adding the background intensity part to compensate for the mutual interference between object and reference arms. The results demonstrate that the DC component can be eradicated. Compared with conventional OCT and complex Fourier-domain optical coherence tomography, the advantages of PSDOCT with the improved algorithm in free space are that it has no moving parts to generate consecutive phase shift, the structure of the object can be reconstructed immediately and automatically, and the speed is approximately 16 times faster than those of the other two in the same case.
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| 关 键 词： | 非散射目标图象 图象重建 平行谱域 高速扫描 光学相干断层摄影术 |
| 收稿时间： | 2006-12-31 |
Parallel Spectral-Domain Optical Coherence Tomography for Non-Scattering Object Imaging |
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| LI Gang,REN Zhao,WU Kaijie,ZHANG Taishi,LIN Ling.Parallel Spectral-Domain Optical Coherence Tomography for Non-Scattering Object Imaging[J].Transactions of Tianjin University,2007,13(2):107-112. |
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| Authors: | LI Gang REN Zhao WU Kaijie ZHANG Taishi LIN Ling |
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| Abstract: | The parallel spectral-domain optical coherence tomography(PSDOCT) is described for high-speed optical coherence tomography(OCT) without lateral scanning. In this setup, the self-elimination of auto-correlation(AC) interference algorithm was used for eradicating the AC interference and ghost images. However, when performed in free space OCT, this algorithm still generated a weak DC component. The algorithm was improved by adding the background intensity part to compensate for the mutual interference between object and reference arms. The results demonstrate that the DC component can be eradicated. Compared with conventional OCT and complex Fourier-domain optical coherence tomography, the advantages of PSDOCT with the improved algorithm in free space are that it has no moving parts to generate consecutive phase shift, the structure of the object can be reconstructed immediately and automatically, and the speed is approximately 16 times faster than those of the other two in the same case. |
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| Keywords: | high-speed optical coherence tomography parallel spectral-domain optical coherence tomography self-elimination of auto-correlation image reconstruction high-speed scanning |
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