Recently, novel imaging techniques based on the “memory-effect” speckle-correlations have enabled diffraction-limited imaging through scattering layers and around corners. These techniques, however, are currently limited to imaging only small planar objects contained within the angular and axial range of the memory effect. In addition, they do not provide depth information or depth-sectioning capability. Here, we extend speckle-correlation imaging to include high-resolution depth-sectioning capability in the reflection mode, by combining it with coherence gating via low-coherence holography. We demonstrate depth measurements of reflective targets through a scattering layer, and speckle-correlation imaging using coherence-gated scattered light.

中文翻译：

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通过相干门控通过散射层的深度分辨散斑相关成像

最近，基于“内存效应”散斑相关性的新颖成像技术已使通过散射层和拐角周围的衍射受限成像成为可能。但是，这些技术目前仅限于仅对包含在记忆效应的角度和轴向范围内的小型平面物体进行成像。此外，它们不提供深度信息或深度切片功能。在这里，我们将散斑相关成像扩展到在反射模式下具有高分辨率的深度切片功能，方法是将其与通过低相干全息术的相干门控相结合。我们演示了通过散射层对反射目标的深度测量，以及使用相干门控散射光的散斑相关成像。