Quantitative Analysis of Magnon Induced Second-Order Sideband Generation

An analogous Kerr nonlinearity of a magnon would be a subject of interest and plays an important role in researching the interactions between the magnons and photons. Using the experimentally achievable parameters, we present a perturbed approach to deal with the nonlinear dynamics of magnon polaritons and obtain analytical formulas to understand the physical picture of magnon induced second-order sideband generation. We prove that this effect is modified by either adjusting the microwave drive power and the Kerr coefficient or the coupling strength. The numerical calculations of the system dynamic equations show an excellent agreement with our analytical results. In particular, an optimal parameter area is proposed, in which the signal of magnon-induced second-order sideband generation is robust. In addition to providing insight into the nonlinear interactions between the magnons and photons, our results may also offer attractive new prospects for the development of the magnon frequency comb.