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偶次和半整数次谐波的产生
引用本文: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):40-445.
作者姓名:吴海涛  龚尚庆  金石琦  徐至展
作者单位:中国科学院上海光学精密机械研究所强光光学开放研究实验室,上海,201800
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2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。

关 键 词:高次谐波  双色场  薛定谔方程  数值求解
收稿时间:1998/12/30

Even Harmonic and Semi-Integer Harmonic Generation
Wu Haitao,Gong Shangqing,Jin Shiqi,Xu Zhizhan.Even Harmonic and Semi-Integer Harmonic Generation[J].Acta Optica Sinica,2000,20(4):40-445.
Authors:Wu Haitao  Gong Shangqing  Jin Shiqi  Xu Zhizhan
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.
Keywords:high-order harmonic generation  two-color coherent fields  one-dimensional time-dependent Shrdinger equation  numerical solution
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