Observation of superradiant synchrotron radiation in the terahertz region

被引：12

作者：

Billinghurst, B. E. ^{[1
]}

Bergstrom, J. C. ^{[1
]}

Dallin, L. ^{[1
]}

de Jong, M. ^{[1
]}

May, T. E. ^{[1
]}

Vogt, J. M. ^{[1
]}

Wurtz, W. A. ^{[1
]}

机构：

[1] Univ Saskatchewan, Canadian Light Source Inc, Saskatoon, SK S7N 2V3, Canada

来源：

PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS | 2013年 / 16卷 / 06期

基金：

加拿大健康研究院; 加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1103/PhysRevSTAB.16.060702

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：

We report the first high-resolution measurement of superradiance, using coherent synchrotron radiation in the terahertz region from the Canadian Light Source synchrotron and a Michelson interferometer with a nominal frequency resolution of 0.000 96 cm(-1). Superradiance arises when a high degree of phase coherence exists between the radiation fields of the individual electron bunches, and manifests itself as a series of narrow spectral peaks at harmonics of the bunch frequency. We observe an enhancement factor of 16 at the spectral peaks, limited by the interferometer resolution. The spectral distribution and relative amplitudes of the superradiant peaks are modified by altering the pattern of bunches along the bunch train.

引用

页数：5

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