Octave-spanning ultrafast OPO with 2.6-6.1 µm instantaneous bandwidth pumped by femtosecond Tm-fiber laser.

@article{Leindecker2012OctavespanningUO,
  title={Octave-spanning ultrafast OPO with 2.6-6.1 µm instantaneous bandwidth pumped by femtosecond Tm-fiber laser.},
  author={Nick C. Leindecker and Alireza Marandi and Robert L. Byer and Konstantin L. Vodopyanov and Jie Jiang and Ingmar Hartl and Martin E. Fermann and Peter Gerard Schunemann},
  journal={Optics express},
  year={2012},
  volume={20 7},
  pages={
          7046-53
        }
}
We report the extension of broadband degenerate OPO operation further into mid-infrared. A femtosecond thulium fiber laser with output centered at 2050 nm synchronously pumps a 500-μm-long crystal of orientation patterned GaAs providing broadband gain centered at 4.1 µm. We observe a pump threshold of 17 mW and output bandwidth extending from 2.6 to 6.1 µm at the -30 dB level. Average output power was 37 mW. Appropriate resonator group dispersion is a key factor for achieving degenerate… CONTINUE READING

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