CAJ | 학술논문

基于二阶微扰理论,分析了整形啁啾脉冲作用于原子系统的双光子过程.研究了在远离共振和近共振两种情况下啁啾脉冲光场作用时双光子跃迁几率的演化规律.结果表明：远离共振时,利用整形光脉冲作用于原子系统,会使得某些频率对应处的跃迁几率消失,光可以无损耗通过介质;近共振时,选择最佳相位函数对脉冲整形,可获得最大的双光子跃迁几率.
기우이계미우이론,분석료정형조추맥충작용우원자계통적쌍광자과정.연구료재원리공진화근공진량충정황하조추맥충광장작용시쌍광자약천궤솔적연화규률.결과표명：원리공진시,이용정형광맥충작용우원자계통,회사득모사빈솔대응처적약천궤솔소실,광가이무손모통과개질;근공진시,선택최가상위함수대맥충정형,가획득최대적쌍광자약천궤솔.
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.