Superimposed-harmonic Smith-Purcell free-electron lasers driven by periodic electron-bunches
Sign Up to like & getrecommendations! Published in 2019 at "Physics of Plasmas"
DOI: 10.1063/1.5064865
Abstract: To meet the requirements of high power and broad-tunable terahertz sources, we proposed and investigated a modified Smith-Purcell free-electron laser (SP-FEL) driven by periodic electron-bunches (PEBs). We first designed an electron-gun with a photocathode, which… read more here.
Keywords: purcell free; electron; smith purcell; free electron ... See more keywords
Third harmonic working based on the Smith–Purcell radiation in a closed structure
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DOI: 10.1063/5.0005308
Abstract: Smith–Purcell radiation is well analyzed in an open structure; however, it is seldom studied in a closed structure. In a high order mode resonant system, the harmonics of the spoof surface plasmon in the subwavelength… read more here.
Keywords: structure; purcell radiation; smith purcell; radiation ... See more keywords
Smith–Purcell radiation improved by multi-grating structure
Sign Up to like & getrecommendations! Published in 2022 at "Chinese Physics B"
DOI: 10.1088/1674-1056/ac5390
Abstract: The photonic crystal structure has attracted much attention due to its ability to confine light. In this paper, we present our study on an improved Smith–Purcell radiation from a simple metal photonic crystal excited by… read more here.
Keywords: purcell radiation; radiation; multi grating; structure ... See more keywords
Half-cylindrical grating structure for enhancing radiation power of Smith–Purcell emitter
Sign Up to like & getrecommendations! Published in 2019 at "Optical Engineering"
DOI: 10.1117/1.oe.58.10.103107
Abstract: Abstract. We propose a new structure of Smith–Purcell (SP) emitter for increasing its power radiation. Injection of an electron beam passing over the metallic surface causes excitation of the surface mode for metal grating and… read more here.
Keywords: radiation; radiation power; power; purcell emitter ... See more keywords
Proposal for elliptical and circular groove gratings for Smith–Purcell terahertz radiation
Sign Up to like & getrecommendations! Published in 2020 at "Optical Engineering"
DOI: 10.1117/1.oe.59.2.023101
Abstract: Abstract. The goal of our paper is to show the design of a Smith–Purcell (SP) terahertz (THz) emitter with two circular and elliptical groove grating structures and its simulations. The SP source is a vacuum-state… read more here.
Keywords: radiation; groove; proposal elliptical; smith purcell ... See more keywords
Incoherent Form Factor in Diffraction and Smith—Purcell Radiations
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DOI: 10.1134/s0021364019220120
Abstract: It has been shown that polarization radiation of charged particle beams generally includes an incoherent form factor caused by a finite transverse size of a beam. Consequently, a widespread opinion that the form factor characterizes… read more here.
Keywords: form factor; smith purcell; form; incoherent form ... See more keywords
Enhancement of Smith-Purcell radiation from cylindrical gratings by quasi-bound states in the continuum.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.455763
Abstract: Smith-Purcell radiation (SPR) is an important means of generating terahertz waves, and the enhancement of SPR is an attractive topic nowadays. Inspired by the phenomenon of special SPR, where the enhancement is achieved by using… read more here.
Keywords: spr; bound states; states continuum; purcell radiation ... See more keywords
Generation of Airy beams in Smith-Purcell radiation.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.460106
Abstract: The metasurface has recently emerged as a powerful platform to engineer wave packets of free electron radiation at the mesoscale. Here, we propose that Airy beams can be generated when moving electrons interact with bianisotropic… read more here.
Keywords: purcell radiation; airy beams; radiation; smith purcell ... See more keywords
Tuning Smith-Purcell radiation by rotating a metallic nanodisk array.
Sign Up to like & getrecommendations! Published in 2023 at "Optics letters"
DOI: 10.1364/ol.484324
Abstract: Smith-Purcell radiation (SPR) refers to the far-field, strong, spike radiation generated by the interaction of the evanescent Coulomb field of the moving charged particles and the surrounding medium. In applying SPR for particle detection and… read more here.
Keywords: purcell radiation; radiation; smith purcell; nanodisk array ... See more keywords
Vortex Smith–Purcell radiation generation with holographic grating
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DOI: 10.1364/prj.394136
Abstract: Smith–Purcell radiation (SPR) is the electromagnetic wave generated by free electrons passing above a diffraction grating, and it has played an important role in free-electron light sources and particle accelerators. Orbital angular momentum (OAM) is… read more here.
Keywords: vortex smith; purcell radiation; smith purcell; radiation ... See more keywords
Spiral Field Generation in Smith-Purcell Radiation by Helical Metagratings
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DOI: 10.34133/2019/3806132
Abstract: Moving electrons interacting with media can give rise to electromagnetic radiations and has been emerged as a promising platform for particle detection, spectroscopies, and free-electron lasers. In this letter, we investigate the Smith-Purcell radiation from… read more here.
Keywords: field; radiation helical; smith purcell; helical metagratings ... See more keywords