Review and analysis of autocorrelation electron bunch length measurements
Review and analysis of autocorrelation electron bunch length measurements
复制标题
DOI：
10.1016/j.nima.2006.08.081
复制
发表时间：
2006-12
影响因子：
1.4
通讯作者：
C. Thongbai;H. Wiedemann
中科院分区：
文献类型：
--
作者：
C. Thongbai;H. Wiedemann
亚皮秒电子脉冲对于研究化学和生物过程的下一代光源的发展变得越来越重要。这样的过程发生在皮秒或亚皮秒的时间尺度上，并且在真实的时间中观察这样的反应的能力具有极大的科学兴趣。这些和其他研究机会燃料大规模的努力，产生飞秒电子脉冲。这一奋进的关键部分是测量和正确分析飞秒脉冲的能力，这超出了即使是最先进的条纹相机的能力，留下光谱方法作为目前最有效的方法来测量这样的短脉冲。这种方法是基于在迈克尔逊干涉仪中进行的自相关技术。然而，该技术受到可用于远红外光谱区的有限的合适光学材料的影响。在这项工作中，这些限制和其他问题领域的影响进行了研究，并详细讨论了它们对飞秒脉冲测量的影响定性和定量。此外，这种技术也可以应用于无损相干衍射辐射显示其自身的局限性和问题，将讨论。
Sub-picosecond electron pulses become increasingly important for the development of next generation light sources to study chemical and biological processes. Such processes occur on picosecond or sub-picosecond time scales and the ability to observe such reactions in real time is of great scientific interest. These and other research opportunities fuel large scale efforts toward the generation of femtosecond electron pulses. A critical part in this endeavor is the ability to measure and correctly analyze femtosecond pulses which is beyond the capabilities of even the most advanced streak cameras leaving a spectroscopic method as the presently most efficient way to measure such short pulses. This method is based on an autocorrelation technique performed in a Michelson interferometer. The technique, however, suffers from limited suitable optical materials available for the far infrared spectral regime. In this work the effects of such limitations and other problem areas have been investigated and their impact on femtosecond pulse measurements is discussed in detail both qualitatively and quantitatively. Furthermore, this technique can also be applied to nondestructive coherent diffraction radiation which displays its own limitations and problems as will be discussed.