Title :
Tunable coherent soft X-rays
Author :
Rosfjord, Kristine M. ; Liu, Yanwei ; Attwood, David T.
Author_Institution :
Center for X-Ray Opt., Univ. of California, Berkeley, CA, USA
Abstract :
A tunable, spatially and spectrally coherent soft X-ray undulator branchline at the Advanced Light Source (ALS) is under operation. Using the third harmonic from an 8-cm period undulator, this branch delivers coherent soft X-rays with photon energies ranging from 200 to 1000 eV. Here, the beamline layout and characterization are presented. The characterization includes measurements of available coherent photon flux as well as a series of double-pinhole experiments to measure spatial coherence in the focal plane.
Keywords :
X-ray apparatus; X-ray optics; coherence; laser tuning; wigglers; 200 to 1000 eV; beamline; coherent photon flux; spatial coherence; third harmonic; tunable coherent soft X-ray undulator branchline; Free electron lasers; Laboratories; Optical harmonic generation; Optical scattering; Spatial coherence; Tunable circuits and devices; Ultrafast optics; Ultraviolet sources; Undulators; X-rays;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2004.838036
