Deterministic control of broadband light through a multiply scattering medium via the multispectral transmission matrix

TL;DR

This paper introduces a method to measure the spectrally-resolved transmission matrix of a scattering medium, enabling deterministic control of broadband light for focusing and spectral separation through wavefront shaping.

Contribution

It presents a novel technique to deterministically control broadband light in scattering media by measuring the multispectral transmission matrix.

Findings

Successfully focused specific spectral components of femtosecond pulses.

Demonstrated spatial separation of spectral components at arbitrary positions.

Enabled controllable dispersive optical functionalities.

Abstract

We present a method to measure the spectrally-resolved transmission matrix of a multiply scattering medium, thus allowing for the deterministic spatiospectral control of a broadband light source by means of wavefront shaping. As a demonstration, we show how the medium can be used to selectively focus one or many spectral components of a femtosecond pulse, and how it can be turned into a controllable dispersive optical element to spatially separate different spectral components to arbitrary positions.