Coherent Light with Tunable Polarization from Single-Pass Free-Electron Lasers
Tunable polarization over a wide spectral range is a required feature of light sources employed to investigate the properties of local symmetry in matter. In this Letter, we provide the first experimental characterization of the polarization of the harmonic light produced by a free-electron laser and demonstrate a method to obtain free-electron laser harmonics with tunable polarization.
C. Spezzani et. al, DOI: 10.11033/PhysRevLett.107.084801
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Figure on the left:
Upper panel: Normalized Stokes’ parameters M=I (triangles, experiments; dashed line, theory) and S=I (circles, experiments; continuous line, theory), as a function of the ratio Bx =By . Lower panel: On-axis intensity (circles, experiments; continuous line, theory), normalized to the intensity recorded when the polarization is linear horizontal, as a function of the ratio Bx =By . Relative errors are estimated to be about 15%. Nonlinear harmonic emission at 195 nm. |
Retrieve articleCoherent Light with Tunable Polarization from Single-Pass Free-Electron Lasers C. Spezzani1, E. Allaria1, M. Coreno2, B. Diviacco1, E. Ferrari3,1, G. Geloni4, E. Karantzoulis1, B. Mahieu5,1, M. Vento1, and G. De Ninno5,1 1Sincrotrone Trieste, S.S. 14 km 163.5, Basovizza (Trieste), Italy 2CNR-IMIP, Montelibretti (Rome), Italy 3Trieste University, Italy 4European XFEL GmbH, Hamburg, Germany 5University of Nova Gorica, Slovenia DOI: 10.1103/PhysRevLett.107.084801 |
Last Updated on Friday, 16 December 2011 21:07
