Enhancement of the transition probabilities for the two-photon transition with shaped chirped-pulse
ZHANG Min-hua, Abulimiti·Wumaier, XU Kang, REN Li-qing, LI Yong-fang*
(College of Physics and Information Technology, Shaanxi Normal University, Xi′an 710062, Shaanxi, China)
Abstract:
Based on the second-order perturbation theory, the two-photon processes in the atom system excited by a shaped chirped-pulse are analyzed. The evolution of the two-photon transition probability is studied under the two cases of non-resonance and resonance. It′s shown that the transition probabilities disappeared at some corresponding frequencies under the non-resonance case, and thus the laser pulse can get through the medium without loss. Meanwhile, the maximum two-photon transition probability is obtained by choosing the best shaping function under the resonance case.
KeyWords:
two-photon transition; transition probabilities; shaped chirped-pulse
