Abstract
The present theoretical study is concerned with the behavior of a D2+ molecular complex strongly confined in a semiconductor quantum ring under external probes: intense laser-field radiation and orthogonal electric and magnetic fields. The theoretical calculations were made using finite element method within the effective mass approximation. The effects of the external probes, donor-donor separation and quantum ring geometrical parameters on the D2+ total energy, D2+ binding energy, and D2+ optical response are studied. We show that the laser-field radiation has a great influence on the two fragmentation processes of D2+ and on their essential features: equilibrium length and dissociation energy. The D2+ optical response defined through adsorption coefficient is studied. Laser field radiation may cause red or blue shifts in the adsorption coefficient peak depending on the quantum ring size and donor-donor positions while the magnetic field can induce an optical transparency effect.
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