Effect of detuning on the few-cycle laser pulse propagation in the three-level atomic medium  

作　　者：王蕾 梁变 王振东 樊锡君 

机构地区：[1]College of Physics and Electronics,Shandong Normal University

出　　处：《Optoelectronics Letters》2010年第2期157-160,共4页光电子快报（英文版）

基　　金：supported by the National Basic Research Program of China (No.2006CB806000);the Open Fund of the State Key Laboratory of High Field Laser Physics,Shanghai Institute of Optics and Fine Mechanics,China

摘　　要：The effect of detuning on the few-cycle laser pulse propagation in the ladder-type three-level atomic medium is investigated by using the numerical solution from the Maxwell-Bloch equations without the slowly varying envelope and rotating-wave approximations.The results show that in the resonance case,the obvious variation of the pulse form,including the carrierenvelope phase,the pulse duration,the oscillation amplitude and frequency,even the pulse splitting will occur in the propagation,and the output pulse is much different from the input.In the off-resonance case,the varying detuning also can lead to the considerable variation of the pulse form in the propagation.However,with an appropriate detuning,the selfinduced transparency can be realized,and the output pulse exactly the same as the input can be obtained.The effect of detuning on the few-cycle laser pulse propagation in the ladder-type three-level atomic medium is investigated by using the numerical solution from the MaxweU-Bloch equations without the slowly varying envelope and rotating-wave approximations. The results show that in the resonance case, the obvious variation of the pulse form, including the carder- envelope phase, the pulse duration, the oscillation amplitude and frequency, even the pulse splitting will occur in the propagation, and the output pulse is much different from the input. In the off-resonance case, the varying detuning also can lead to the considerable variation of the pulse form in the propagation. However, with an appropriate detuning, the self- induced transparency can be realized, and the output pulse exactly the same as the input can be obtained.

关 键 词：三能级原子 脉冲传输 失谐效应 对数周期 激光 BLOCH方程 作者 脉冲持续时间 

分 类 号：TN249[电子电信—物理电子学]