1. Depth of focus extension in optical coherence tomography using ultrahigh chromatic dispersion of zinc selenide

    Depth of focus extension in optical coherence tomography using ultrahigh chromatic dispersion of zinc selenide

    We report a novel technique to overcome the depth-of-focus limitation in optical coherence tomography using chromatic dispersion of zinc selenide lens. Optical coherence tomography is an established method of optical imaging, which found numerous biomedical applications. However, the depth scanning range of high-resolution optical coherence tomography is limited by its depth of focus. Chromatic dispersion of zinc selenide lens allows to get high lateral resolution along extended depth of focus, because the different spectral components are focused at a different position along axes of light propagation. Test measurements with nanoparticle phantom show 2.8 times extension of the depth of ...

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