Abstract
We propose a compact Smith-Purcell radiation device that can potentially generate high average power THz radiation with high conversion efficiency. The source is based on a train of short electron bunches from an rf photoemission gun at an energy of a few MeV. Particle tracking simulation and analysis show that, with a beam current of 1 mA, it is feasible to generate hundreds of watts of narrow-band THz radiation at a repetition rate of 1 MHz.
Highlights
Demand for terahertz radiation is increasing in many areas of science and technology, such as material characterization, chemical and biological analysis, and a variety of imaging applications [1]
We propose a compact Smith-Purcell radiation device that can potentially generate high average power THz radiation with high conversion efficiency
The key for high efficiency in a beam-based radiation source, including free-electron lasers [4,5], is to exploit the coherence enhancement effect or quasiphase matching by beam profile tailoring
Summary
Demand for terahertz radiation is increasing in many areas of science and technology, such as material characterization, chemical and biological analysis, and a variety of imaging applications [1]. High-power beam-based coherently enhanced THz radiation source The source is based on a train of short electron bunches from an rf photoemission gun at an energy of a few MeV.
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