Vol. 25, issue 03, article # 15
Frolov S. A., Trunov V. I., Pestryakov E. V., Kirpichnikov A. V., Petrov V. V. Optimization of OPCPA cascades of petawatt few-cycle laser system based on BBO and LBO crystals. // Optika Atmosfery i Okeana. 2012. V. 25. No. 03. P. 278-284 [in Russian].Copy the reference to clipboard
Abstract:
Influence of linear and nonlinear phase effects on the process of OPCPA of few-cycle femtosecond pulses in BBO and LBO crystals with picosecond pump is investigated. Such effects include diffraction, which determines beam divergence, walk-off due to birefringence, self and cross phase modulation and small-scale self-focusing. In order to generate amplified pulses with stable spatiotemporal parameters, which permit the realization of coherent summation in multi-channel laser system, the requirements for spatial parameters and inhomogeneities of input beams for each cascade of high power few-cycle laser system, which is being developed in ILP SB RAS, were determined.
Keywords:
petawatt laser system, OPCPA, femtosecond pulses, small-scale self-focusing, LBO