Ryczkowski Piotr, Turunen Jari, Friberg Ari T, Genty Goëry
Optics Laboratory, Department of Physics, Tampere University of Technology, 33720 Tampere, Finland.
Institute of Photonics, University of Eastern Finland, P. O. Box 111, FI-80101 Joensuu, Finland.
Sci Rep. 2016 Feb 26;6:22126. doi: 10.1038/srep22126.
We demonstrate experimentally spectral-domain intensity optical coherence tomography using a Mach-Zehnder interferometer with balanced detection. We show that the technique allows for a point spread function with reduced full-width at half maximum compared to conventional optical coherence tomography. The method further provides benefits similar to those of chirped-pulse interferometry in terms of dispersion cancellation but only requires a broadband incoherent source and standard detectors. The measurements are in excellent agreement with the theoretical predictions. Finally, we propose an approach that enables the elimination of potential artefacts arising from multiple interfaces.
我们通过使用具有平衡检测的马赫-曾德尔干涉仪，对光谱域强度光学相干断层扫描进行了实验演示。我们表明，与传统光学相干断层扫描相比，该技术允许具有减小的半高全宽的点扩散函数。该方法在色散消除方面还提供了与啁啾脉冲干涉测量法类似的优点，但只需要一个宽带非相干光源和标准探测器。测量结果与理论预测非常吻合。最后，我们提出了一种方法，能够消除由多个界面产生的潜在伪像。
