# Temporal oscillations of light transmission through dielectric microparticles subjected to optically induced motion

## TL;DR

This paper analyzes how light transmission oscillates over time due to optically induced motion of dielectric microparticles in waveguides and resonators, revealing potential for optical control and monitoring.

## Contribution

It provides an analytical model of light-induced particle dynamics in waveguides and resonators, uncovering diverse oscillation regimes and characteristic frequencies.

## Key findings

- Light transmission oscillates with frequencies around 10^5 Hz.
- Diverse dynamical regimes are identified for particle motion.
- Potential applications in optical particle control and sensing.

## Abstract

We consider light-induced binding and motion of dielectric microparticles in an optical waveguide that gives rise to a back-action effect such as light transmission oscillating with time. Modeling the particles by dielectric slabs allows us to solve the problem analytically and obtain a rich variety of dynamical regimes both for Newtonian and damped motion. This variety is clearly reflected in temporal oscillations of the light transmission. The characteristic frequencies of the oscillations are within the ultrasound range of the order of $10^{5}$ Hz for micron size particles and injected power of the order of 100 mW. In addition, we consider driven by propagating light dynamics of a dielectric particle inside a Fabry-Perot resonator. These phenomena pave a way for optical driving and monitoring of motion of particles in waveguides and resonators.