• Laser & Optoelectronics Progress
  • Vol. 60, Issue 1, 0122002 (2023)
Chen Wu1、2, Zhiyuan Zhang2, Yihui Xu3, Li Song4, Xiaohao Dong2、4、*, and Zhi Liu1、3
Author Affiliations
  • 1School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
  • 2Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
  • 3Center for Transformative Science, ShanghaiTech University, Shanghai 201210, China
  • 4Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
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    DOI: 10.3788/LOP220917 Cite this Article Set citation alerts
    Chen Wu, Zhiyuan Zhang, Yihui Xu, Li Song, Xiaohao Dong, Zhi Liu. Split-Delay Optical System for Hard X-Ray Free-Electron Lasers[J]. Laser & Optoelectronics Progress, 2023, 60(1): 0122002 Copy Citation Text show less
    Schematic of split-delay optical system
    Fig. 1. Schematic of split-delay optical system
    Schematic of splitting. (a) Wavefront splitting; (b) intensity splitting based on Bragg crystals
    Fig. 2. Schematic of splitting. (a) Wavefront splitting; (b) intensity splitting based on Bragg crystals
    Schematic of crystal layout of split-delay optical system
    Fig. 3. Schematic of crystal layout of split-delay optical system
    Simulation of beam profile. (a) Beam after DCM; (b) upper beam; (c) lower beam; (d) merged beam
    Fig. 4. Simulation of beam profile. (a) Beam after DCM; (b) upper beam; (c) lower beam; (d) merged beam
    Splitting and alignment of lower-brunch
    Fig. 5. Splitting and alignment of lower-brunch
    Alignment of upper-brunch
    Fig. 6. Alignment of upper-brunch
    Photon energy E /keVWith channel-cutWithout channel-cut
    Minimum delay τmin /psMaximum delay τmax /psMinimum delay τmin /psMaximum delay τmax /ps
    7-15.4320.1167.8503.3
    8-31.8225.1128.4385.3
    9-41.0162.0101.5304.5
    10-46.0118.482.2246.6
    11-15.4320.1167.8503.3
    Table 1. Calculation results of split-delay optical system at different situations
    Source ΔE/ECrystal configurationThroughput of upper beam Tup /%Throughput of lower beam Tlow /%
    BS/BMBRCC
    Si(111)1.4×10-4Si(220)Si(220)33.5450.00
    Si(220)Si(220)Si(220)33.5433.64
    Table 2. Simulation results of throughput with 8 keV
    Chen Wu, Zhiyuan Zhang, Yihui Xu, Li Song, Xiaohao Dong, Zhi Liu. Split-Delay Optical System for Hard X-Ray Free-Electron Lasers[J]. Laser & Optoelectronics Progress, 2023, 60(1): 0122002
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