The Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Physics, University of Auckland, Auckland, 1010, New Zealand.
Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University in Toruń, Grudziadzka 5, 87-100, Toruń, Poland.
Sci Rep. 2021 Sep 20;11(1):18585. doi: 10.1038/s41598-021-98106-5.
Quantum Optical Coherence Tomography (Q-OCT) is a non-classical equivalent of Optical Coherence Tomography and is able to provide a twofold axial resolution increase and immunity to resolution-degrading dispersion. The main drawback of Q-OCT are artefacts which are additional elements that clutter an A-scan and lead to a complete loss of structural information for multilayered objects. Whereas there are very practical and successful methods for artefact removal in Time-domain Q-OCT, no such scheme has been devised for Fourier-domain Q-OCT (Fd-Q-OCT), although the latter modality-through joint spectrum detection-outputs a lot of useful information on both the system and the imaged object. Here, we propose two algorithms which process a Fd-Q-OCT joint spectrum into an artefact-free A-scan. We present the theoretical background of these algorithms and show their performance on computer-generated data. The limitations of both algorithms with regards to the experimental system and the imaged object are discussed.
量子光学相干断层扫描（Q-OCT）是光学相干断层扫描的非经典等效方法，能够提供两倍的轴向分辨率提高和对分辨率降低的色散的免疫性。Q-OCT 的主要缺点是伪影，这些伪影是杂乱 A 扫描的附加元素，并导致多层物体的结构信息完全丢失。虽然时域 Q-OCT 中有非常实用和成功的伪影去除方法，但傅里叶域 Q-OCT（Fd-Q-OCT）中没有这样的方案，尽管后者通过联合光谱检测输出了关于系统和成像物体的大量有用信息。在这里，我们提出了两种算法，将 Fd-Q-OCT 联合光谱处理为无伪影的 A 扫描。我们介绍了这些算法的理论背景，并展示了它们在计算机生成数据上的性能。讨论了这两种算法对实验系统和成像物体的限制。
