Magnon-induced high-order sideband generation

TL;DR

This paper investigates how magnon Kerr nonlinearity induces high-order sideband generation in a cavity-magnon system, revealing control mechanisms via driving fields and beat frequency, with implications for optical technologies.

Contribution

It introduces the first detailed study of high-order sideband generation driven by magnon Kerr nonlinearity, highlighting control methods and potential applications in optical metrology and communications.

Findings

Driving field controls sideband generation and amplification.

Sideband spacing can be tuned by beat frequency regulation.

Results deepen understanding of optomagnonics nonlinearity.

Abstract

Magnon Kerr nonlinearity plays crucial roles in the study of cavity optomagnonics system and may bring many novel physical phenomena and important applications. In this work, we report the investigation of high- order sideband generation induced by magnon Kerr nonlinearity in a cavity-magnon system, which is critically lacking in this emerging research field. We uncover that the driving field plays a significant role in controlling the generation and amplification of the higher-order sidebands and the sideband spacing can be adjusted by regulating the beat frequency between the pump laser and the probe laser, which is extremely eventful for the spacing modulation of the sideband spectrum. Based on the recent experimental progress, our results deepen our cognition into optomagnonics nonlinearity and may find interesting applications in optical frequency metrology and optical communications.