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Area of Science:

  • Physics
  • Laser Science
  • Materials Science

Background:

  • Free-electron lasers (FELs) produce high-intensity ultrashort pulses.
  • The FLASH facility at DESY operates two parallel undulator beamlines (FLASH1 and FLASH2).
  • The sFLASH section on FLASH1 is designed for coherent extreme ultraviolet (XUV) pulse generation.

Purpose of the Study:

  • To demonstrate simultaneous lasing across multiple FELs at FLASH.
  • To explore the capabilities of the FLASH facility for advanced XUV and X-ray research.
  • To showcase the potential of seeded FEL operation for coherent pulse generation.

Main Methods:

  • Utilizing the superconducting linear accelerator driving the FLASH facility.
  • Operating the FLASH1 and FLASH2 undulator beamlines concurrently.
  • Employing the sFLASH undulator section for seeded FEL experiments.

Main Results:

  • Achieved simultaneous lasing of three distinct FELs.
  • Generated ultrashort pulses at wavelengths of 13.4 nm, 20 nm, and 38.8 nm.
  • Demonstrated the capability for multi-wavelength FEL operation.

Conclusions:

  • The simultaneous lasing capability enhances the versatility of the FLASH facility.
  • This achievement opens new avenues for ultrafast science and coherent XUV/X-ray research.
  • The results highlight the successful integration of seeded FEL technology for advanced applications.