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Optical Materials Express· 2026Q2

Taming the single-cylinder scattering through time-modulation - The role of the modulation phase

Jian Yan, I. Katsantonis, M. Mostafa, V. Asadchy et al.

Short summary

Controlling the modulation phase of time-varying dielectric cylinders allows for tunable scattering patterns, enabling enhanced forward, backward, or even cancelled scattering.

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Abstract

Dielectric particles with time-modulated electromagnetic properties exhibit intriguing scattering phenomena, entailing unique response and possibilities in meta-structures made of such particles. In this work, we investigate the scattering properties of an infinitely-long cylinder with periodically time-modulated permittivity. We demonstrate parametric scattering amplification, depending on the strength of the modulation, as well as controllable angular scattering pattern, ranging from enhanced forward to enhanced backward, or even scattering cancellation. This angular tunability is achieved through appropriate control of the modulation phase, highlighting its critical role in multi-modal time-modulated scattering systems.

The authors' abstract, as published at the source. Optical Materials Express, 2026 · DOI ↗

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Field: Electronic, Optical and Magnetic Materials

Electronic, Optical and Magnetic MaterialsMaterials Science