High-power femtosecond fiber-feedback optical parametric oscillator based on periodically poled stoichiometric LiTaO3.

@article{Sdmeyer2004HighpowerFF,
  title={High-power femtosecond fiber-feedback optical parametric oscillator based on periodically poled stoichiometric LiTaO3.},
  author={Thomas S{\"u}dmeyer and Edith Innerhofer and Felix P. Brunner and Ruediger Eberhard Paschotta and Takeshi Usami and Hiromasa Ito and Sunao Kurimura and K. Kitamura and David C. Hanna and Ursula Keller},
  journal={Optics letters},
  year={2004},
  volume={29 10},
  pages={
          1111-3
        }
}
We demonstrate a synchronously pumped high-gain optical parametric oscillator with feedback through a fiber, using a passively mode-locked Yb:YAG thin-disk laser as a pump source. We obtain as much as 19-W average signal power at a wavelength of 1.45 microm in 840-fs pulses and 7.8 W of idler power at 3.57 microm. The repetition rate of the pulses is 56 MHz, and the transverse beam quality of the generated signal is M2 < 1.6. 
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