Non-invasive single-shot imaging through scattering layers and around corners via speckle correlations

作者：Katz, Ori^*; Heidmann, Pierre; Fink, Mathias; Gigan, Sylvain

来源：Nature Photonics, 2014, 8(10): 784-790.

DOI：10.1038/NPHOTON.2014.189

• THIN TURBID LAYERS
• DISORDERED MEDIA
• PHASE RETRIEVAL
• ENCODED LIGHT
• TIME
• MICROSCOPY
• TRANSMISSION
• RESOLUTION
• LOOKING
• REGIME

Optical imaging through and inside complex samples is a difficult challenge with important applications in many fields. The fundamental problem is that inhomogeneous samples such as biological tissue randomly scatter and diffuse light, preventing the formation of diffraction-limited images. Despite many recent advances, no current method can perform non-invasive imaging in real-time using diffused light. Here, we show that, owing to the 'memory-effect' for speckle correlations, a single high-resolution image of the scattered light, captured with a standard camera, encodes sufficient information to image through visually opaque layers and around corners with diffraction-limited resolution. We experimentally demonstrate single-shot imaging through scattering media and around corners using spatially incoherent light and various samples, from white paint to dynamic biological samples. Our single-shot lensless technique is simple, does not require wavefront-shaping nor time-gated or interferometric detection, and is realized here using a camera-phone. It has the potential to enable imaging in currently inaccessible scenarios.

• 出版日期2014-10