Spectral phase interferometry for direct electric-field reconstruction of synchrotron radiation
Spectral phase interferometry for direct electric-field reconstruction of synchrotron radiation
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DOI：
10.1364/optica.477535
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发表时间：
2023-02-20
期刊：
影响因子：
10.4
通讯作者：
Katoh, Masahiro
中科院分区：
文献类型：
--
作者：
Fuji, Takao;Kaneyasu, Tatsuo;Katoh, Masahiro
波荡器是同步加速器光源中广泛使用的一种装置，用于产生某种准单色光;但由于缺乏测量技术，其波形从未被记录下来。在这里，我们提出了一种方法来表征由相对论电子产生的电场波形使用光谱相位干涉算法的直接电场重建，这是一个最常见的方法来表征超短激光脉冲。其结果是，我们已经成功地恢复了10个周期的方形包络电场，这对应于10个周期的永磁体的波荡器。这种方法可以极大地促进包括x射线自由电子激光器在内的同步辐射源的发展。(c)2023 Optica出版集团根据Optica开放获取出版协议的条款
An undulator is a device widely used in synchrotron light sources to produce a certain quasi-monochromatic light; however, its waveform has never been recorded due to the lack of measurement techniques. Here we propose an approach to characterize the waveforms of electric fields produced by relativistic electrons using an algorithm of spectral phase interferometry for direct electric-field reconstruction, which is one of the most common methods to characterize ultrashort laser pulses. As a result, we have succeeded in retrieving a 10-cycle square enveloped electric field, which corresponds to 10 periods of permanent magnets of the undulator. This method can dramatically improve the development of synchrotron sources including x-ray free electron lasers. (c) 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement