Multimode dynamics in a short-pulse THz free electron laser

被引：9

作者：

Chulkov, Ruslan ^{[1
]}

Goryashko, Vitaliy ^{[2
]}

Arslanov, Denis D. ^{[3
]}

Jongma, Rienk T. ^{[3
]}

van der Zande, Wim J. ^{[3
]}

Zhaunerchyk, Vitali ^{[4
]}

机构：

[1] Natl Acad Sci Belarus, BI Stepanov Phys Inst, Minsk 220072, BELARUS

[2] Uppsala Univ, Dept Phys & Astron, S-75120 Uppsala, Sweden

[3] Radboud Univ Nijmegen, Inst Mol & Mat, NL-6525 AJ Nijmegen, Netherlands

[4] Gothenburg Univ, Dept Phys, S-41296 Gothenburg, Sweden

来源：

PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS | 2014年 / 17卷 / 05期

基金：

瑞典研究理事会;

关键词：

FEL; SIMULATION;

D O I：

10.1103/PhysRevSTAB.17.050703

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The interaction of waveguide modes and consequences on laser operation are studied numerically in a THz free electron laser (FEL) driven by short electron bunches. The considered FEL cavity configuration is represented by a parallel-plate waveguide extending over the complete distance between cylindrical cavity mirrors with energy out-coupling through a rectangular slit in one of the mirrors. We describe the multimode FEL cavity desynchronization dynamics and predict strong enhancement in FEL power at special cavity configurations, when modes are degenerate. Furthermore, we predict that simultaneous excitation of several waveguide modes can occur but do not negatively influence the lasing process.

引用

页数：9

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