强激光场中离子HD^+光解离几率的相干控制  

THE COHERENT CONTROL OF PHOTODISSOCIATION OF THE ION HD + IN INTENSE LASER FIELDS

作　　者：王国文[1] 

机构地区：[1]北京大学物理系

出　　处：《光子学报》1998年第8期673-678,共6页Acta Photonica Sinica

基　　金：国家自然科学基金资助项目激光相干控制分子离解通道的研究;曙光1000计算机基金

摘　　要：对含时薛定谔方程用短时传播子的对称分割法求得了非微扰的数值解，计算了强超短脉冲基频激光（波长３０６７ｎｍ）与其三倍频激光作用下的离子ＨＤ＋光解离的相干控制参量大小设该离子的初态为电子振动基态其中的相干激发是共振的二束光之间的相对相位变化从０到３６０°在基频和倍频激光强度各为５×１０１３Ｗ／ｃｍ２和５０９×１０８Ｗ／ｃｍ２情形下，发现相对相位为π时。The coherent control of photodissociation of the ion HD + subjected to the intense pulsed fundamental(306.7nm)and the third harmonic laser radiations has been calculated.The nonperturbative and numerical solution of the time dependent Schro ¨dinger equation is calculated applying the symmetrical splitting of the short time exponential propagator.The initial state of the ion in the propagation is its ground vibronic state.The coherent exicitation is of resonance.The variation of the relative phases of the two laser beams ranges from 0 to 360 degrees.It has been shown that the total dissociation probability reaches the maximum at the relative phase of π for the pulses with the intensities of the fundamental and the third harmonic radiations,5×10 -13 W/cm 2 and 5.09×10 8W/cm 2

关 键 词：光解离几率 相干控制 离子HD^+ 激光场 

分 类 号：O644.18[理学—物理化学]