ArticleScience advances2023
Free-electron Brewster-transition radiation.
Article in Science advances, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Enhanced tunable X-rays from bulk crystals driven by table-top free electron energies.Nature communications · 2025Article
- A gain route to reversed Cherenkov radiation.Science advances · 2025Article
- Free-electron resonance transition radiation via Brewster randomness.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Multicolor x-rays from free electron-driven van der Waals heterostructures.Science advances · 2023Article
- Numerical investigation of sequential phase-locked optical gating of free electrons.Scientific reports · 2023Article
- Interfacial Cherenkov radiation from ultralow-energy electrons.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
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Authors and funding
10 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
We reveal a mechanism to enhance particle-matter interactions by exploiting the pseudo-Brewster effect of gain materials, presenting an enhancement of at least four orders of magnitude for light emission. This mechanism is enabled by the emergence of an unprecedented phase diagram that maps all phenomena of free-electron transition radiation into three distinct phases in a gain-thickness parameter space, namely, the conventional, intermediate, and Brewster phases, when an electron penetrates a dielectric slab with a modest gain and a finite thickness. Essentially, our revealed mechanism corresponds to the free-electron transition radiation in the Brewster phase, which also features ultrahigh directionality, always at the Brewster angle, regardless of the electron velocity. Counterintuitively, we find that the intensity of this free-electron Brewster-transition radiation is insensitive to the Fabry-Pérot resonance condition and, thus, the variation of slab thickness, and moreover, a weaker gain could lead to a stronger enhancement for light emission.
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Registered trials
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