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arXiv · 1311.3797

Fast Polarization Switching Demonstration Using Crossed-Planar Undulator in a Seeded Free Electron Laser

Haixiao Deng·Tong Zhang·Lie Feng·Chao Feng·Bo Liu·Xingtao Wang·Taihe Lan·Guanglei Wang·Wenyan Zhang·Xiaoqing Liu·Jianhui Chen·Meng Zhang·Guoqiang Lin·Miao Zhang·Dong Wang·Zhentang Zhao
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Abstract

Fast polarization switching of light sources is required over a wide spectral range to investigate the symmetry of matter. In this Letter, we report the first experimental demonstration of the crossed-planar undulator technique at a seeded free-electron laser, which holds great promise for the full control and fast switching of the polarization of short-wavelength radiation. In the experiment, the polarization state of the coherent radiation at the 2nd harmonic of the seed laser is switched successfully. The experiment results confirm the theory, and pave the way for applying the crossed-planar undulator technique for the seeded X-ray free electron lasers.

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Haixiao Deng, Tong Zhang, Lie Feng, Chao Feng, Bo Liu, Xingtao Wang, Taihe Lan, Guanglei Wang, Wenyan Zhang, Xiaoqing Liu, Jianhui Chen, Meng Zhang, Guoqiang Lin, Miao Zhang, Dong Wang, Zhentang Zhao. 2013-11-18. Fast Polarization Switching Demonstration Using Crossed-Planar Undulator in a Seeded Free Electron Laser. https://doi.org/10.1103/physrevstab.17.020704

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