A Simple 1 mJ Ti:Sapphire Booster Amplifier for the KALDERA plasma Acceleration Drive Laser at 1 kHz

The KALDERA laser at DESY will drive a laser-plasma accelerator with up to kHz-level repetition rates [1]. The setup and commissioning of the first project phase of the Ti:Sa based CPA laser, aiming for 100 Hz, 0.5 J, <30 fs pulses, has taken place during the last two years. These parameters should be reached at excellent beam quality and an energy stability of <0.5% rms.