Group velocity matching in terahertz-driven dielectric-lined waveguides for electron acceleration
Group velocity matching in terahertz-driven dielectric-lined waveguides for electron acceleration
复制标题
用于电子加速的太赫兹驱动介电衬里波导中的群速度匹配
DOI:
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发表时间:
2017
期刊:
影响因子:
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通讯作者:
S. Jamison
中科院分区:
文献类型:
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作者:
A. Healy;G. Burt;S. Jamison
Terahertz(THz)-driven dielectric-lined waveguides have applications in electron manipulation, particularly acceleration, as the use of dielectric allows for phase velocities below the speed of light. However matching a single frequency to the correct velocity does not maximise electron-THz interaction; waveguide dispersion typically results in an unmatched group velocity and so the pulse envelope of a short THz pulse changes along the length of the structure. This reduces field amplitude and therefore accelerating gradient as the envelope propagates at a different velocity to the electron. The effect on net acceleration is demonstrated via an example of a structure excited by a THz pulse of different temporal lengths.
影响因子:
16.6
作者:
Nanni EA;Huang WR;Hong KH;Ravi K;Fallahi A;Moriena G;Miller RJ;Kärtner FX
通讯作者:
Kärtner FX