A multi-electron-beam Cherenkov oscillator operating at mm wavelengths

Wang, Hongtao; Chen, Chia-erh; Hu, Kangmin; Wang, Pingshan

doi:10.1016/0168-9002(94)91191-6

Nuclear Instruments and Methods in Physics Research Section A:

1994

DOI: 10.1016/0168-9002(94)91191-6

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A multi-electron-beam Cherenkov oscillator operating at mm wavelengths

Hongtao Wang

Chia-erh Chen

Kangmin Hu

et al.

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2016

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Čerenkov free-electron laser with side walls

Kalkal¹,

Kumar²

2016

Nuclear Instruments and Methods in Physics Research Section A:

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In this paper, we have proposed aČerenkov free-electron laser (CFEL) with metallic side walls, which are used to confine an electromagnetic surface mode supported by a thin dielectric slab placed on top of a conducting surface. This leads to an enhancement in coupling between the optical mode and the co-propagating electron beam, and consequently, performance of the CFEL is improved.We set up coupled Maxwell-Lorentz equations for the system, in analogy with an undulator based conventional FEL, and obtain formulas for the small-signal gain and growth rate. It is shown that small signal gain and growth rate in this configuration are larger compared to the configuration without the side walls. In the nonlinear regime, we solve the coupled Maxwell-Lorentz equations numerically and study the saturation behaviour of the system. It is found that theČerenkov FEL with side walls saturates quickly, and produces powerful coherent terahertz radiation.

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Čerenkov free-electron laser with side walls

Kalkal¹,

Kumar²

2016

Nuclear Instruments and Methods in Physics Research Section A:

View full text Add to dashboard Cite

show abstract

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A multi-electron-beam Cherenkov oscillator operating at mm wavelengths

Cited by 1 publication

References 5 publications

Čerenkov free-electron laser with side walls

Čerenkov free-electron laser with side walls

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