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The effects of Gaussian beams on optical coherence tomography

机译：高斯光束对光学相干断层扫描的影响

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The theory of optical coherence tomography (OCT) was conventionally considered as the light beams propagating in the system to be in the forms of planar waves. However, the actual behaviors of the light beams in an OCT system are more likely to be Gaussian beams. With the consideration of the light beam passing through the focal lens in the sample arm to be a Gaussian beam, we deduced the theory of OCT in an analytic form. We also simulated and analyzed the interference signals with different positions of the photodetector and the interface in the sample as well as their transverse patterns spectrally. The results were demonstrated by experiments with a Fourier-domain OCT system.
机译：光学相干断层扫描理论（OCT）通常被认为是在系统中传播的光束以平面波的形式。然而，OCT系统中的光束的实际行为更可能是高斯光束。考虑到穿过样品臂中的焦透镜的光束是高斯梁，我们以分析形式推导了OCT的理论。我们还模拟并分析了具有光电探测器的不同位置的干扰信号和样品中的界面以及它们的横向图案。通过用傅里叶结构域OCT系统进行实验证明了结果。

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