Cr:Forsterite oscillator synchronously pumped by an ytterbium ultrafast laser

The femtosecond generation in the Cr:Forsterite laser synchronously pumped by an ytterbium ultrafast laser is implemented. It was found that synchronous pumping is a stable regime with respect to small changes in cavity length and allows mode-locked regime to be maintained in the temperature range 4 degrees Celsius higher. The energy and spectral parameters of pulses in various generation regimes are characterized. The dependence of the position of the spectrum on the pulse repetition rate is investigated. Difference frequency generation is realized with output radiation at a wavelength near 6 μm at a high repetition rate. Such a seeding source is promising for development powerful chirped pulse amplification systems in mid-IR range based on iron doped chalcogenide crystals.