Generation of induced Smith-Purcell radiation: free-electron laser in open system

Klochkov, D. N.; Oganesyan, K. B.; Ayryan, Е. A.; Измаилян, Н. Ш.

doi:10.1080/09500340.2015.1088969

Cited by 2 publications

(2 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Remarkably, the wavelength and direction of emitted light can be tuned from the microwave to ultraviolet region by adjusting the energy of the electron beam or the structure of the periodic surroundings. The free laser based on Cherenkov radiation and Smith–Purcell radiation has been proposed and fabricated . Artificially engineered metamaterials can tailor the interaction between the electron and matter, manifesting new opportunities to improve the sources' performance like radiation power density and other novel functionalities.…”

Section: Applicationsmentioning

confidence: 99%

Manipulating Cherenkov Radiation and Smith–Purcell Radiation by Artificial Structures

Xiong

et al. 2019

Advanced Optical Materials

View full text Add to dashboard Cite

A moving charged particle, such as an electron, can radiate light due to the interaction between its Coulomb field and surrounding matter. This phenomenon has spawned great interest in the fields of physics, electron microscopy, optics, biology, and materials science. Since the radiation generated by the charged particles strongly depends on the surrounding matter, artificially engineered materials with exotic electromagnetic and optic properties, including metamaterials and metasurfaces, provide an unprecedented opportunity to tailor the interaction between the charged particle and matter, and ultimately enable to manipulate the radiated light. In this review, the fundamentals of Cherenkov radiation and Smith–Purcell radiation are presented. Subsequently, the recent advances in the control of Cherenkov radiation and Smith–Purcell radiation based on metamaterials and metasurfaces are summarized. Finally, the applications using these two physical phenomena, including electron‐driven photon sources and electron accelerators, are discussed in this review.

show abstract

Section: Applicationsmentioning

confidence: 99%

Manipulating Cherenkov Radiation and Smith–Purcell Radiation by Artificial Structures

Xiong

et al. 2019

Advanced Optical Materials

View full text Add to dashboard Cite

show abstract

“…The idea of developing a new kind of freeelectron laser based on SP radiation seemed practical, after observing THz superradiant at currents above 1 in Dartmouth experiment [2]. Since then, a lot of theoretical and experimental works have been done on the SP-FEL, as it is a compact size tunable THz source of radiation [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Start current and growth rate in Smith–Purcell free-electron laser with dielectric-loaded cylindrical grating

Rezaei

Farokhi

2019

J Theor Appl Phys

View full text Add to dashboard Cite

We present an analytic theory for Smith-Purcell device in which a cylindrical metal-dielectric grating was derived by an annular electron beam propagating along the grating axis. A dispersion relation is obtained for azimuthally symmetric modes. Also, the first-order and second-order growth rates of the modes which are in phase with the beam are compared. It is shown that the second-order growth rate gives a more accurate description of beam-wave interaction for beams with larger thicknesses, as well as grating slots, with smaller depths and greater lengths. The start current for BWO operation of the SP-FEL is presented too. The importance of the minimum value of start current is that above it, the SP-FEL will operate as an oscillator, even in the absence of external feedback. In this case, the group velocity of the synchronous evanescent wave is negative, while the electron beam travels in the forward direction. It is shown in this paper that the dielectric and grating parameters affect the value of start current. So, by changing these parameters, the minimum value for the start current can be obtained.

show abstract

Generation of induced Smith-Purcell radiation: free-electron laser in open system

Cited by 2 publications

References 18 publications

Manipulating Cherenkov Radiation and Smith–Purcell Radiation by Artificial Structures

Manipulating Cherenkov Radiation and Smith–Purcell Radiation by Artificial Structures

Start current and growth rate in Smith–Purcell free-electron laser with dielectric-loaded cylindrical grating

Contact Info

Product

Resources

About