论文信息 - Compact spectrometer for the analysis of high harmonics content of extreme-ultraviolet free-electron-laser radiation

Compact spectrometer for the analysis of high harmonics content of extreme-ultraviolet free-electron-laser radiation

We present the design and characterization of the spectrometer to be used at the FLASH facility (DESY, Hamburg) to characterize the spectral properties of free-electron-laser radiation in terms of high harmonics content. The spectrometer is sensitive in the 2-40 nm region. The optical design consists of two spherical gratings with variable groove spacing and a extreme-ultraviolet-enhanced CCD detector. The instrument design and characterization are presented.

[1] H. Wabnitz,et al. The soft x-ray free-electron laser FLASH at DESY: beamlines, diagnostics and end-stations , 2009 .

[2] D Giuressi,et al. The photon analysis, delivery, and reduction system at the FERMI@Elettra free electron laser user facility. , 2009, The Review of scientific instruments.

[3] T. Harada,et al. Mechanically ruled aberration-corrected concave gratings. , 1980, Applied optics.

[4] Giampiero Naletto,et al. Grazing-incidence flat-field spectrometer for high-order harmonic diagnostics , 2001 .

[5] T. Harada,et al. Development of a flat-field grazing-incidence XUV spectrometer and its application in picosecond XUV spectroscopy. , 1984, Applied optics.

[6] Luca Poletto,et al. On-line spectrometer for FEL radiation at FERMI@Elettra , 2008 .