Optical scanning holography requires interference optics, which separates a laser beam into two paths and recombines the two path beams after being modulated spatially and temporarily. This requires high accuracy and stability of the apparatus with a highly coherent light source. In this Letter, we propose a coaxial scanning holography (CSH) capable of realizing scanning holography with high stability and low complexity by forming a scanning beam in a single optical path using a geometrical phase shift. An experimental verification of the CSH by optical acquisition and subsequent reconstruction of the hologram is reported.

中文翻译：

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同轴扫描全息

光学扫描全息术需要干涉光学器件，该干涉光学器件将激光束分成两个路径，并在空间和临时调制之后重新组合两个路径光束。这需要具有高度相干光源的设备的高精度和稳定性。在这封信中，我们提出了一种同轴扫描全息图（CSH），该同轴扫描全息图能够通过使用几何相移在单个光路上形成扫描光束来实现高稳定性和低复杂度的扫描全息图。报道了通过光学获取和随后的全息图重建对CSH的实验验证。