SPECTRAL BANDWIDTH IN FREE-ELECTRON-LASER OSCILLATORS

被引：12

作者：

KIM, KJ

机构：

[1] Lawrence Berkeley Laboratory, University of California, Berkeley

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.66.2746

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The evolution of the spectral bandwidth in free-electron-laser (FEL) oscillators is studied and found to be different for different saturation characteristics: For weakly saturated FELs in storage rings, the limiting bandwidth is given by that derived in the supermode theory; for linac-based FELs, where the gain reduction due to the high-intensity effect is significant, it is determined by the Fourier transform of the electron pulse length; for the case of a dc beam, it is given by a Schawlow-Townes formula, but the approach to the limit is very slow.

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页码：2746 / 2749

页数：4

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