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Updated: Jul 4, 2025

Fabrication and Characterization of Superconducting Resonators
Published on: May 21, 2016
Rigorous coupled-wave analysis of unilateral Smith-Purcell radiation from asymmetric resonators
Abstract:
The Smith-Purcell radiation produced by electrons moving closely to a grating can be enhanced by resonances. Here, we show a method to manipulate the directionality of the resonance-enhanced radiation. Using the rigorous coupled-wave analysis method, we compare the radiation from symmetric and asymmetric gratings, showing that the enhanced Smith-Purcell radiation can become unilateral with a perturbation that breaks the structural symmetry. Our work provides an effective method for frequency-domain calculation of Smith-Purcell radiation and also an approach to realize more efficient use of the radiation.
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