COHERENT STARTUP OF AN INFRARED FREE-ELECTRON LASER
COHERENT STARTUP OF AN INFRARED FREE-ELECTRON LASER
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DOI：
10.1103/physrevlett.71.3798
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发表时间：
1993-12-06
影响因子：
8.6
通讯作者：
VANAMERSFOORT, PW
中科院分区：
文献类型：
--
作者：
JAROSZYNSKI, DA;BAKKER, RJ;VANAMERSFOORT, PW
自发波荡器辐射的相干增强的几个数量级已被观察到在自由电子激光器在40至100 μ m的波长。相干发射可以用电子束微脉冲结构的细节来解释。此外，已经发现，光学微脉冲的相位由电子脉冲结构固定，并且相干性在连续的光学微脉冲上延伸，这引起作为激光振荡器中的光学腔长度的函数的干涉效应。
Coherent enhancement of the spontaneous undulator radiation by several orders of magnitude has been observed in a free-electron laser at wavelengths from 40 to 100 mum. The coherent emission can be explained by details of the electron-beam micropulse structure. Furthermore, it has been found that the phase of the optical micropulses is fixed by the electron pulse structure and that the coherence extends over successive optical micropulses, which gives rise to interference effects as a function of the optical cavity length in a laser oscillator.