摘要
从电离的几率方程出发，得到了适用于任意激光脉冲宽度下原子的饱和激光强度和最高次谐波光子能量与各激光参数的关系表达式，并由此给出了产生高次谐波的优化条件。解决了当超短脉冲激光的脉冲宽度小于皮秒时，产生高次谐波（ＨＨＧ）的隧道电离理论中的Ａｍｍｏｓｏｖ—Ｄｅｌｏｎｅ—Ｋｒａｉｎｏｖ方法对产生高次谐波的饱和激光强度以及最高次谐波光子能量的估算不可靠的问题。
It is not reliable to estimate the saturation laser intensity and the photon energy for thehighest order harmonic using Ammosov-Delone-Kraimov(ADK) tunneling ionization theory in generation ofhigh order harmonic when pulse duration of drive laser is shorter than picosecond. In this paper, new expressions for the saturation laser intensity and the photon energy for the highest order harmonic for an arbitrarylaser pulse duration have been derived. Based on the expressions, the optimized parameters have beenachieved to generate high order harmonic.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
1999年第6期705-709,共5页
High Power Laser and Particle Beams
基金
中国工程物理研究院科学基金
高温高密度等离子体物理重点实验室基金
