Open AccessImaging around corners in the mid-infrared using speckle correlations
Author(s) -
Shawn Divitt,
Dennis F. Gardner,
Abbie T. Watnik
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.388260
Subject(s) - bispectrum , speckle pattern , optics , speckle imaging , speckle noise , line of sight , spectral imaging , physics , infrared , ptychography , wavefront , phase retrieval , diffraction , fourier transform , computer science , spectral density , quantum mechanics , telecommunications , astrophysics
Speckle correlation imaging offers the ability to see objects through diffusive materials and around corners. Imaging self-illuminating thermal objects in non-line-of-sight scenarios is of particular interest. Here, using bispectrum and phase retrieval methods, we demonstrate speckle correlation imaging of mid-infrared objects through diffusers and around corners at resolutions near the diffraction limit. The images agree well with those recorded by conventional cameras with line-of-sight to the same objects.