  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 that are 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 reflection-mode, by combining it with coherence-gating via low
coherence holography. We demonstrate depth measurements of hidden targets
through a scattering layer, and speckle-correlation imaging using
coherence-gated scattered light.
