We have developed a method to measure the electric field standing wave distributions in a microwave resonator using a scanned perturbation technique. Fast and reliable solutions to the Helmholtz equation (and to the Schrodinger equation for two dimensional systems) with arbitrarily-shaped boundaries are obtained. We use a pin perturbation to image primarily the microwave electric field amplitude, and we demonstrate the ability to image broken time-reversal symmetry standing wave patterns produced with a magnetized ferrite in the cavity. The whole cavity, including areas very close to the walls, can be imaged using this technique with high spatial resolution over a broad range of frequencies.
@article{arxiv.chao-dyn/9806023,
title = {A Scanned Perturbation Technique For Imaging Electromagnetic Standing Wave Patterns of Microwave Cavities},
author = {Ali Gokirmak and Dong-Ho Wu and J. S. A. Bridgewater and Steven M. Anlage},
journal= {arXiv preprint arXiv:chao-dyn/9806023},
year = {2009}
}
Comments
To be published in Review of Scientific Instruments,September, 1998