L2-DUHA 100 TW High Repetition Rate Laser System at ELI-Beamlines: Key Design Considerations

Abstract

We discuss the current development of the L2-DUHA laser system at ELI-Beamlines. L2-DUHA is intended to be a high repetition rate, 100 TW-class laser system whose primary purpose is to serve as a driver for a laser-driven X-ray free electron laser. Optical parametric chirped pulse amplification (OPCPA) pumped by diode-pumped solid state lasers (DPSSL) was chosen as the method of broadband amplification for the laser. We discuss the key considerations in the design of the laser and focus primarily on the broadband front end, the high energy pump laser, and high energy OPCPA stages.