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上海深紫外自由电子激光的非线性谐波辐射研究
Nonlinear harmonic generation in Shanghai deep ultraviolet FEL
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摘要: 自由电子激光中的非线性谐波辐射能达到较高的谐波功率,可以用来得到短波长辐射或者降低第4代先进光源对电子束团品质的严厉要求.基于3维自由电子激光软件,深入详细地研究了上海深紫外自由电子激光装置的非线性谐波辐射,并且提出了谐波辐射实验和测量建议.研究表明上海深紫外自由电子激光装置3次非线性谐波辐射的功率可以达到基波功率的2%水平.
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关键词:
- 非线性谐波 /
- 自由电子激光 /
- 高增益高次谐波发生器 /
- 自放大自发辐射
Abstract: High powers of the harmonics can be achieved through nonlinear harmonic generation in high gain single pass FEL, which may be used to get shorter wavelengths or to relax some stringent requirements on the electron beam quality for the 4th generation light source. In this paper, the 3rd nonlinear harmonic generation in Shanghai Deep Ultraviolet Free Electron Laser source is investigated by a 3D simulation code, including the sensitivity of nonlinear harmonic generation to several crucial parameters of the FEL system. The results show that the power of the 3rd nonlinear harmonic radiation can be as high as 2% of the fundamental power. In addition, the experiment and measurement of the 3rd harmonic radiation is proposed. -
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