Quantum control of dissociation of an iodine molecule by one and two femtosecond laser pulses excitation

We introduce two approaches to the synthesis of the optimized schemes of dissociation control of diatomic molecules. The first one bases on the early introduced speed-gradient algorithms of the quantum control. We use the semi classical model of molecular dynamics onto the ground state. The introduced algorithm is a robust and it has only one tuning parameter. The numerical results of the control of the predissociation of iodine molecule illustrate the high possibility of the dissociation for 100 fs laser pulse. The second approach bases on quantum model of dissociation through B excited electronic state. This model doesn't assume the solving of any time-depended equations. The optimized scheme of iodine dissociation with different nuclear isotopes is obtained. The best isotope separation achieves up to 300 fs with 80% efficiency.