摘要
用数值求解一维含时薛定谔方程的方法计算了由频率分别为ω及 1.5ω的激光组成的双色场作用下的模型原子产生的高次谐波谱。发现由于双色场的相干效应 ,在其谐波谱中不仅产生了奇次谐波 ,还产生了偶次谐波和半整数次谐波。分析了各次谐波产生的原因以及对谐波转化效率产生影响的主要因素。
By numerically integrating the one dimensional time dependent Shrodinger equation, the high order harmonic generation (HHG) spectrum of a model atom irradiatedby two color coherent fields with frequency ω and 1.5ω is calculated respectively. It is found that there exist odd harmonics, even harmonics and semi integer harmonics due to the coherent interaction between two colors. The origin of these harmonics and main factors influencing the harmonic efficiency are discussed in detail.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2000年第4期440-445,共6页
Acta Optica Sinica
关键词
高次谐波
双色场
薛定谔方程
数值求解
high order harmonic generation, two color coherent fields, one dimensional time dependent Shrodinger equation, numerical solution.
