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Figure 2
Spatial intensity distributions of right circularly polarized beams at 60 nm wavelength, measured by the pinhole scan in the transverse plane. Two-dimensional profiles for (a) fundamental radiation from the upstream undulator, (b) second-harmonic radiation from the downstream undulator, and (c) interference pattern.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
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