Ultrashort X-ray Free Electron Laser Pulse Manipulation by Optical Matrix

Hu，Kai1,2; Zhu，Ye2; Xu，Zhongmin2; Wang，Qiuping2; Zhang，Weiqing2,3; Yang，Chuan2,4

2023-05-01

10.3390/photonics10050491

Photonics   影响因子和分区

2304-6732

Free electron laser (FEL) is capable of producing ultra-short X-ray pulses. The estimation of X-ray pulse propagation is the key process of X-ray FEL beamline design. By using the Kostenbauder matrix approach, the evolution of an ultra-short pulse in a beamline system can be calculated. Therefore, it is of significant importance to investigate the Kostenbauder matrices of different kinds of X-ray optics. In this work, we derive a unified 6 × 6 optical matrix to describe various kinds of X-ray optical elements, including varied-line-spacing (VLS) toroidal grating, VLS spherical grating, VLS cylindrical grating, VLS plane grating, toroidal grating, spherical grating, cylindrical grating, plane grating, toroidal mirror, spherical mirror, cylindrical mirror, and plane mirror. These optics are usually adopted in soft X-ray regime. We apply this method to describe the transverse focusing, pulse front tilt, and pulse stretching after an X-ray pulse going through a VLS plane grating monochromator (VLS-PGM). We also use this approach to simulate a grating compressor which can be used to compress chirped soft X-ray pulse. This work is helpful in the design and optimization of X-ray beamline systems.

dispersion free electron laser pulse propagation X-ray optics

SCI

英语

通讯

National Natural Science Foundation of China[12005135];National Natural Science Foundation of China[22288201];

Optics

Optics

WOS:001018280900001

MDPI

2-s2.0-85160527584

Scopus

1.National Synchrotron Radiation Laboratory,University of Science and Technology of China,Hefei,230029,China
2.Institute of Advanced Science Facilities,Shenzhen,518107,China
3.State Key Laboratory of Molecular Reaction Dynamics,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian,116023,China
4.College of Science,Southern University of Science and Technology,Shenzhen,518055,China

Hu，Kai,Zhu，Ye,Xu，Zhongmin,et al. Ultrashort X-ray Free Electron Laser Pulse Manipulation by Optical Matrix[J]. Photonics,2023,10(5).

Hu，Kai,Zhu，Ye,Xu，Zhongmin,Wang，Qiuping,Zhang，Weiqing,&Yang，Chuan.(2023).Ultrashort X-ray Free Electron Laser Pulse Manipulation by Optical Matrix.Photonics,10(5).

Hu，Kai,et al."Ultrashort X-ray Free Electron Laser Pulse Manipulation by Optical Matrix".Photonics 10.5(2023).