Single-shot analysis of hard x-ray laser radiation using a noninvasive grating spectrometer

Opt Lett. 2012 Dec 15;37(24):5073-5. doi: 10.1364/OL.37.005073.

Abstract

We present a spectrometer setup based on grating dispersion for hard x-ray free-electron lasers. This setup consists of a focusing spectrometer grating and a charge-integrating microstrip detector. Measurement results acquired at Linac Coherent Light Source are presented, demonstrating noninvasive monitoring of single-shot spectra with a resolution of 2.0×10(-4) ±0.3×10(-4) at photon energy of 6 keV with more than 95% transmission of the main beam.