Formation and Parametric Amplification of Femtosecond Pulses with a Central Wavelength of 910nm Using Radiation from a Subpicosecond Ytterbium Laser

We use the methods of supercontinuum generation and nonlinear parametric transformations to develop a laser system that forms femtosecond pulses with a duration of several field oscillations and a central wavelength of 910 nm, which are synchronized with the seed radiation of the pump laser. The duration of femtosecond pulses was 20 fs at a repetition rate of 1 kHz and a pulse energy higher than 5 μJ. For further amplification to an energy higher than 40 mJ, a pump laser has been developed, and the main parameters of the parametric amplifier have been calculated. The developed laser system will be used as the starting part of the PEARL petawatt parametric laser system.