Spatiotemporal coherent control of light through a multiply scattering medium with the Multi-Spectral Transmission Matrix

TL;DR

This paper introduces a method to control and focus ultrashort light pulses in space and time through scattering media by using a Multi-Spectral Transmission Matrix, enabling advanced manipulation of light for various applications.

Contribution

The authors develop a broadband characterization technique using a single spatial light modulator to fully control spatial and spectral properties of transmitted light.

Findings

Achieved spatiotemporal focusing at arbitrary positions and times.

Controlled spectral shape of transmitted pulses.

Demonstrated potential for imaging and sensing applications.

Abstract

We report broadband characterization of the propagation of light through a multiply scattering medium by means of its Multi-Spectral Transmission Matrix. Using a single spatial light modulator, our approach enables the full control of both spatial and spectral properties of an ultrashort pulse transmitted through the medium. We demonstrate spatiotemporal focusing of the pulse at any arbitrary position and time with any desired spectral shape. Our approach opens new perspectives for fundamental studies of light-matter interaction in disordered media, and has potential applications in sensing, coherent control and imaging.