Karamata B, Lambelet P, Laubscher M, Salathé R P, Lasser T
Institute for Biomedical Imaging, Optics and Engineering, Swiss Federal Institute of Technology, CH-1015 Lausanne, Switzerland.
Opt Lett. 2004 Apr 1;29(7):736-8. doi: 10.1364/ol.29.000736.
Comparison of two illumination modes for wide-field optical coherence tomography has revealed that spatially coherent illumination generates coherent cross talk, causing significant image degradation, and that spatially incoherent illumination, with an adequate interferometer design, provides an efficient mechanism for suppression of coherent cross talk. This is shown by comparison of a pulsed laser with a thermal light source for a U.S. Air Force resolution target covered with a scattering solution made from microbeads as well as for an ex vivo tooth.
对宽场光学相干断层扫描的两种照明模式进行比较后发现,空间相干照明会产生相干串扰,导致图像严重退化,而在采用适当干涉仪设计的情况下,空间非相干照明提供了一种抑制相干串扰的有效机制。这一点通过将脉冲激光与热光源进行比较得以证明,比较对象包括覆盖有由微珠制成的散射溶液的美国空军分辨率靶标以及一颗离体牙齿。