Effect of experimental parameters on optimal transmission of light through opaque media

TL;DR

This paper investigates how different experimental parameters influence the efficiency of light transmission optimization through opaque media using spatial light modulators, and presents a model to explain observed effects.

Contribution

It systematically analyzes the impact of various experimental conditions on optimization efficiency and introduces a Gaussian beam propagation model to explain the results.

Findings

Intensity enhancement depends on modulated channels, phase steps, feedback radius, beam size, and SLM area.

Developed a model based on Gaussian beam propagation with a random phase front.

Provided insights for optimizing light transmission through opaque media.

Abstract

Spatial light modulator (SLM) controlled transmission of light through opaque media is a relatively new experimental method with wide applications in various fields. While there has been a surge in research into the technique, there has been little work reported considering the effects of various experimental parameters on the efficiency of optimization. In this study, we explore the effects of various experimental conditions on optimization and find that the intensity enhancement depends on the number of modulated channels, number of phase steps, feedback integration radius, beam spot size, and active SLM area. We also develop a model, based on the propagation of a Gaussian beam with a random phase front, to account for most of the measured effects.