Magneto-Optical Spectrum Analyzer
Mathias Helsen, Ajay Gangwar, Arne Vansteenkiste, Bartel, Vanwaeyenberge
TL;DR
This paper introduces a high-sensitivity, high-resolution magneto-optical spectrum analyzer capable of recording gigahertz magnetization dynamics of individual nanostructures using a frequency domain approach and Kerr effect detection.
Contribution
It combines a frequency domain method with micro focus Kerr detection to enable spectral analysis of single magnetic nano elements with submicron spatial resolution.
Findings
Spectra of single nanostructures can be recorded.
Demonstrated uniform precession in soft magnetic platelets.
Achieved high sensitivity to magnetization dynamics.
Abstract
We present a method for the investigation of gigahertz magnetization dynamics of single magnetic nano elements. By combining a frequency domain approach with a micro focus Kerr effect detection, a high sensitivity to magnetization dynamics with submicron spatial resolution is achieved. It allows spectra of single nanostructures to be recorded. Results on the uniform precession in soft magnetic platelets are presented.
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