Three-Dimensional Speckle Light Self-Healing-Based Imaging System

Abstract

Recently new methodologies for imaging have been achieved making use of multiple light scattering. Here we present the self-healing effect using a speckled light field. We present an experiment that constitutes a useful application for a three-dimensional light sheet-based imaging system through an inhomogeneous medium. Each layer can be imaged independently of the others. The axial resolution basically depends on the coherence length, which can be sub-wavelength and controllable. This allows for a simple and direct technique for imaging through scattering layers with axial resolution improvement. Our results may find applications not only in bio-microscopy systems but also in data transmission.

Hyperuniformity in amorphous speckle patterns

“…These light structures can be tailored to produce semi-organized light patterns [14][15][16] able to constitute random potential-energy landscapes [17,18] in use for particles [19] or ultracold atoms [20] manipulation and with striking properties if adopted for structured illuminations [21,22]. The Amorphous Speckle Patterns (ASP) are a kind of light structures with a shortrange correlated light arrangement, generated by a superposition of Bessel modes [13] that lends the pattern the self-healing nature [22], an advantageous property for enhancing optical imaging in thick tissues [22,23]. Besides that, ASP can be exploited to fabricate static structures with disordered refractive index microstructure, as required to observe Anderson localization [24][25][26] and are recurring features in non-linear phenomena like rogue waves [27] and random lasing [28].…”