Theoretical predictions for ultrasensitive sensing in three-dimensional stochastic interferometry

TL;DR

This paper demonstrates that random light fields, when combined with Lambertian reflections inside a cavity, can enable ultrasensitive measurements of tiny changes in physical parameters, achieving picometer-scale precision.

Contribution

It introduces a novel theoretical framework for using stochastic interferometry with boundary conditions to enhance sensing sensitivity.

Findings

High sensitivity to wavelength, refractive index, and geometry perturbations.

Predicts measurable responses down to picometer deformations.

Experimental validation confirms theoretical predictions.

Abstract

We show that a random light field can be harnessed for high-precision metrology by introducing specific boundary conditions in the form of Lambertian reflections inside a cavity. We demonstrate a quantifiable and reproducible interferometric response to minute perturbations in wavelength, refractive index, and geometry, predicting high sensitivities consistent with experimental measurements of geometrical deformations down to the picometer scale.