Two-electron quantum ring in short pulses |
Variation of transition probability with the frequency of the laser beam. The transitions from the ground state to various excited states are shown in each panel for square pulse (a), sine-square pulse (b), and secant-hyperbolic pulse (c). The various other parameters used are E s = 80 kV/cm, I = 8 × 1011 W/cm2, R = 100 a.u., t p = 50 fs. |