光学学报, 2000, 20 (4): 440, 网络出版: 2006-08-09
偶次和半整数次谐波的产生
Even Harmonic and Semi-Integer Harmonic Generation
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 Shrdinger equation numerical solution
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。
Abstract
By numerically integrating the one-dimensional time-dependent Shrodinger equation, the high-order harmonic generation (HHG) spectrum of a model atom irradiated by 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.
吴海涛, 龚尚庆, 金石琦, 徐至展. 偶次和半整数次谐波的产生[J]. 光学学报, 2000, 20(4): 440. 吴海涛, 龚尚庆, 金石琦, 徐至展. Even Harmonic and Semi-Integer Harmonic Generation[J]. Acta Optica Sinica, 2000, 20(4): 440.