Imaging and Detection through Complex Media

Joint University of GlasgowUniversity of Exeter consortium - 3 year (April 2019-March 2022), in collaboration with underpinning UDRC consortium (UEDIN) and Dstl

 

Research

 
Seeing clearly with a camera or focusing a laser beam normally uses a precisely formed lens or mirror.  However, even the most precisely formed lens or mirror cannot image or focus light through a scattering medium, such as fog, turbid water or animal tissue.  We are striving to use the advanced shaping of optical beams in tandem with machine learning AI to both image and listen in these complex environments.  Specifically we aim to use even painted walls as mirrors with which to look around corners, or measure tiny amounts of laser light from which we can detect harmful gases or pick up subtle acoustic signals.
One example of a complex medium is an optical fibre used for guiding light (Image on right).  Normally the light leaving these fibres creates random patterns (left), but precise inverse shaping of the beam allows instead it to be brought to a near perfect focus without any need of a lens or mirror (right).
 

 

People

Prof Miles Padgett

Dr Jacopo Bertolotti

Prof Daniele Faccio

 

 

Optical Fibre
Optical Fibre