### Abstract

The use of two-dimensional Bragg resonators of planar geometry, realizing two-dimensional (2D) distributed feedback, is considered as a method of producing spatially coherent radiation from a large sheet electron beam. The spectrum of eigenmodes is found for a 2D Bragg resonator when the sides of the resonator are open and also when they are closed. The higher selectivity of the open resonator in comparison with the closed one is shown. A time-domain analysis of the excitation of an open 2D Bragg resonator by a sheet electron beam demonstrates that a single-mode steady-state oscillation regime may be obtained for a sheet electron beam of width 100-1000 wavelengths. Nevertheless, for a free-electron maser (FEM) with a closed 2D Bragg resonator, a steady-state regime can also be realized if the beam width does not exceed 50-100 wavelengths. The parameters for a FEM with a 2D planar Bragg resonator driven by a sheet electron beam based on the U-2 accelerator (INP RAS, Novosibirsk) are estimated and the project is described. [S1063-651X(99)04207-5].

Language | English |
---|---|

Pages | 935-945 |

Number of pages | 11 |

Journal | Physical Review E: Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics |

Volume | 60 |

Issue number | 1 |

DOIs | |

Publication status | Published - Jul 1999 |

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### Keywords

- free electron laser
- Bragg resonators
- free electron lasers
- free electron masers
- 2D Bragg
- FEL
- electron beam
- electron bunches
- FEM

### Cite this

*Physical Review E: Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics*,

*60*(1), 935-945. https://doi.org/10.1103/PhysRevE.60.935

}

*Physical Review E: Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics*, vol. 60, no. 1, pp. 935-945. https://doi.org/10.1103/PhysRevE.60.935

**Theory and design of a free-electron maser with two-dimensional feedback driven by a sheet electron beam.** / Ginzburg, N S ; Peskov, N Y ; Sergeev, A S ; Phelps, A D R ; Konoplev, I V ; Robb, G R M ; Cross, A W ; Arzhannikov, A V ; Sinitsky, S L .

Research output: Contribution to journal › Article

TY - JOUR

T1 - Theory and design of a free-electron maser with two-dimensional feedback driven by a sheet electron beam

AU - Ginzburg, N S

AU - Peskov, N Y

AU - Sergeev, A S

AU - Phelps, A D R

AU - Konoplev, I V

AU - Robb, G R M

AU - Cross, A W

AU - Arzhannikov, A V

AU - Sinitsky, S L

PY - 1999/7

Y1 - 1999/7

N2 - The use of two-dimensional Bragg resonators of planar geometry, realizing two-dimensional (2D) distributed feedback, is considered as a method of producing spatially coherent radiation from a large sheet electron beam. The spectrum of eigenmodes is found for a 2D Bragg resonator when the sides of the resonator are open and also when they are closed. The higher selectivity of the open resonator in comparison with the closed one is shown. A time-domain analysis of the excitation of an open 2D Bragg resonator by a sheet electron beam demonstrates that a single-mode steady-state oscillation regime may be obtained for a sheet electron beam of width 100-1000 wavelengths. Nevertheless, for a free-electron maser (FEM) with a closed 2D Bragg resonator, a steady-state regime can also be realized if the beam width does not exceed 50-100 wavelengths. The parameters for a FEM with a 2D planar Bragg resonator driven by a sheet electron beam based on the U-2 accelerator (INP RAS, Novosibirsk) are estimated and the project is described. [S1063-651X(99)04207-5].

AB - The use of two-dimensional Bragg resonators of planar geometry, realizing two-dimensional (2D) distributed feedback, is considered as a method of producing spatially coherent radiation from a large sheet electron beam. The spectrum of eigenmodes is found for a 2D Bragg resonator when the sides of the resonator are open and also when they are closed. The higher selectivity of the open resonator in comparison with the closed one is shown. A time-domain analysis of the excitation of an open 2D Bragg resonator by a sheet electron beam demonstrates that a single-mode steady-state oscillation regime may be obtained for a sheet electron beam of width 100-1000 wavelengths. Nevertheless, for a free-electron maser (FEM) with a closed 2D Bragg resonator, a steady-state regime can also be realized if the beam width does not exceed 50-100 wavelengths. The parameters for a FEM with a 2D planar Bragg resonator driven by a sheet electron beam based on the U-2 accelerator (INP RAS, Novosibirsk) are estimated and the project is described. [S1063-651X(99)04207-5].

KW - free electron laser

KW - Bragg resonators

KW - free electron lasers

KW - free electron masers

KW - 2D Bragg

KW - FEL

KW - electron beam

KW - electron bunches

KW - FEM

U2 - 10.1103/PhysRevE.60.935

DO - 10.1103/PhysRevE.60.935

M3 - Article

VL - 60

SP - 935

EP - 945

JO - Physical Review E

T2 - Physical Review E

JF - Physical Review E

SN - 1539-3755

IS - 1

ER -