Compact, ultrastable, high repetition-rate 2 μm and 3 μm fiber laser for seeding mid-IR OPCPA Journal Article uri icon



  • We report a compact and reliable ultrafast fiber laser system optimized for seeding a high energy, 2 μm pumped, 3 μm wavelength optical parametric chirped pulse amplification to drive soft X-ray high harmonics. The system delivers 100 MHz narrowband 2 μm pulses with >1 nJ energy, synchronized with ultra-broadband optical pulses with a ∼1 μm FWHM spectrum centered at 3 μm with 39 pJ pulse energy. The 2 μm and 3 μm pulses are derived from a single 1.5 μm fiber oscillator, fully fiber integrated with free-space downconversion for the 3 μm. The system operates hands-off with power instabilities <0.2% over extended periods of time.

publication date

  • January 29, 2024

has restriction

  • gold

Date in CU Experts

  • January 23, 2024 9:58 AM

Full Author List

  • Hettel W; Golba G; Morrill D; Carlson D; Chang P; Wu T-H; Diddams S; Kapteyn H; Murnane M; Hemmer M

author count

  • 10

Other Profiles

Electronic International Standard Serial Number (EISSN)

  • 1094-4087

Additional Document Info

start page

  • 4072

end page

  • 4072


  • 32


  • 3