Frequency Comb of Electric-Polarization Waves

TL;DR

This paper proposes creating a terahertz frequency comb using nonlinear electric-polarization waves in ferroelectric materials, leveraging ferrons' properties for advanced applications.

Contribution

It introduces a novel method to generate terahertz frequency combs based on the nonlinear dynamics of ferrons in ferroelectrics.

Findings

Frequency combs can be realized at terahertz frequencies via electric-polarization waves.

The comb's efficiency is proportional to the static electric polarization of ferrons.

This approach enables direct observation of ferron properties.

Abstract

Frequency combs are a spectrum of equally spaced frequency components with very high time-frequency accuracy, which have been widely used in the optical and microwave frequency ranges. We propose the realization of a frequency comb operating at the terahertz regime in terms of the nonlinear dynamics of electric-polarization waves, or ferrons as their quanta, in the ferroelectric materials. The efficiency of the frequency comb of the electric-polarization waves is exactly proportional to the static electric polarization carried by the ferron modes, which thereby offers new opportunities for the direct observation and application of the intrinsic properties of ferrons.