High-efficiency GHz frequency doubling without power threshold in thin-film Ni81Fe19
Materials Science
2015-06-17 v1 Mesoscale and Nanoscale Physics
Abstract
We demonstrate efficient second-harmonic generation at moderate input power for thin film Ni81Fe19 undergoing ferromagnetic resonance (FMR). Powers of the generated second-harmonic are shown to be quadratic in input power, with an upconversion ratio three orders of magnitude higher than that demonstrated in ferrite. The second harmonic signal generated exhibits a significantly lower linewidth than that predicted by low-power Gilbert damping, and is excited without threshold. Results are in good agreement with an analytic, approximate expansion of the Landau-Lifshitz-Gilbert (LLG) equation.
Keywords
Cite
@article{arxiv.1309.7483,
title = {High-efficiency GHz frequency doubling without power threshold in thin-film Ni81Fe19},
author = {Cheng Cheng and William E. Bailey},
journal= {arXiv preprint arXiv:1309.7483},
year = {2015}
}