Coherent terahertz radiation from interaction of electron beam with rippled density plasma

被引：26

作者：

Pathak, Vishwa Bandhu ^{[1
]}

Dahiya, Deepak ^{[1
,2
]}

Tripathi, V. K. ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Phys, New Delhi 110016, India

[2] Indian Inst Technol, Ctr Energy Studies, New Delhi 110016, India

来源：

JOURNAL OF APPLIED PHYSICS | 2009年 / 105卷 / 01期

关键词：

BUNCHES;

D O I：

10.1063/1.3065526

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An alternative free electron laser concept for producing coherent terahertz radiation is investigated. A weakly relativistic electron beam impinged on a rippled underdense plasma, at an angle to the ripple wave vector, interacts with a seed terahertz signal to produce a space charge beam mode. The oscillatory electron velocity due to the beam mode beats with the density ripple to generate a coherent electromagnetic wave in the terahertz frequency range in forward direction. For an electron beam with 5 MW power, one can obtain similar to 40 kW power at 1 THz frequency. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3065526]

引用

页数：5

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