Spectral Speckle Customization

TL;DR

This paper introduces an experimental method to customize the statistical properties of speckle patterns in optical pulses by controlling input light profiles, enhancing their utility in various optical applications.

Contribution

It presents a novel technique for tailoring the spatio-spectral speckle statistics at the output of a complex medium, enabling independent and spectrum-wide customization.

Findings

Able to generate speckle patterns with arbitrary statistics at single wavelengths

Simultaneous control of speckle statistics across decorrelated wavelengths

Tailored speckle statistics across entire pulse spectra

Abstract

Speckle patterns are used in a broad range of applications including microscopy, imaging, and light-matter interactions. Tailoring speckles' statistics can dramatically enhance their performance in applications. We present an experimental technique for customizing the spatio-spectral speckled intensity statistics of optical pulses at the output of a complex medium (a disordered multimode fiber) by controlling the spatial profile of the input light. We demonstrate that it is possible to create ensembles of independent speckle patterns with arbitrary statistics at a single wavelength, simultaneously at decorrelated wavelengths, and even tailored statistics across an entire pulse spectrum.