Related Experiment Video
Updated: Aug 5, 2026

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
Published on: August 5, 2013
Ultrashort microwave pulses generated due to three magnon interactions
1Department of Physics, Colorado State University, Fort Collins, Colorado 80523, USA.
Abstract:
Extremely narrow 2 ns wide microwave pulses are generated from nonlinear magnetostatic surface waves in yttrium iron garnet films. The shortest output pulse with the highest amplitude is achieved for input power levels of about 300 mW and a carrier frequency below 3.3 GHz. The results are explained within the model based on dipole exchange spin wave modes involved in three magnon processes. The characteristic time for these processes to develop, as estimated from the smallest fall time of output pulse, is 1 ns. The relevant modes are verified by Brillouin light scattering.
Related Concept Videos
Atomic Nuclei: Magnetic Resonance
Atomic Nuclei: Nuclear Relaxation Processes
NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences
The Electromagnetic Spectrum
Standing Waves in a Cavity
Double Resonance Techniques: Overview
Spin decoupling is usually achieved by...

