Ti:Sa Crystal Geometry Variation vs. Final Amplifiers of CPA Laser Systems Parameters

In this paper, the different Ti:Sapphire crystal configurations of final amplifiers, depending on Chirped Pulse Amplification laser system parameters, such as repetition rates and pulse energy, are discussed. Restrictions placed Ti:Sa amplifiers with a high rate The these systems is limited due to overheating, which leads stress fracturing or significant beam distortion. heating density threshold leading was calculated taken limit upper level possible pump average power. On basis calculations, highest corresponding thermolens focal distances were estimated for conventional geometry most suitable thicknesses. It demonstrated that shapes, thin disc, can be used below few hundred Hz if several Joules output energy required. rectangular plate more above 1 kHz. Finally, parameters amplifier an 3 J per than 100 TW power kHz presented.