Complex mechanisms of nonlinear interaction of femtosecond laser pulses with molecular atmosphere

摘要

The theoretical analysis of complex mechanisms of nonlinear interaction of powerful femtosecond laser pulses with the molecular atmosphere is presented on the basis of combined action of "elementary" nonlinear effects such as multiphoton or tunnel ionization, Kerr nonlinearity, nonlinear resonance interaction of gas components. Basic attention is focused on analysis of complex mechanisms of quadratic and cubic nonlinear phenomena in the atmosphere.