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Séminaire de Matthieu SALA (28 février 2017)
by - 14 February 2017 (modifié le 27 February 2017)
Theoretical studies of the laser control of polyatomic molecules
The laser control of simple atomic and molecular systems is nowadays a well established research field. Efficient and selective control of population inversion processes, as well as alignment and/or orientation of rigid molecules and the design of pulse sequences to increase the sensitivity of spectroscopic measurements are now possible.
In contrast, the laser control of the internal degrees of freedom of polyatomic molecules remains a challenge, because it requires a thorough understanding of the dynamics of the studied systems. I used the Multi-Configuration Time-Dependent Hartree (MCTDH) method to study two molecular control problems: (i) the control of the inversion motion of NHD2 in its fundamental electronic state and (ii) the control of the non-radiative decay of pyrazine after excitation to the B2u(ππ*) state.
I will present the results obtained on these two systems and discuss the limitations of our approach and some perspectives.
Séminaire de Mathieu SALA - 163.8 KiB 28 février 2017 |