Diagnosis of the Wavelength Stability of a Mid-Infrared Free-Electron Laser

10.6122/CJP.52.163

Xiao-Long Wang；Yu Qin；Takashi Nakajima；Hei-Shun Zen；Toshiteru Kii；Hideaki Ohgaki

Chinese Journal of Physics

52卷1期PartI（2014 / 02 / 01）

163 - 173

英文

The wavelength stability of free-electron lasers (FELs) is one of the important parameters for various applications. In this paper we describe two different methods to diagnose the wavelength stability of a mid-infrared (MIR) FEL. The first one is based on autocorrelation which is usually used to measure the pulse duration, and the second one is based on frequency upconversion through sum-frequency mixing (SFM).