本文提出一个简单的理论模型,模型认为在超强、超短脉冲P极化激光与固体靶相互作用过程中高次谐波的产生是固体靶表面趋肤层中的相对论电子运动形成的横向和纵向电流发出辐射的非线性叠加的结果.在此模型基础上,得到了高次谐波的角分布,并讨论了谐波转换效率与谐波次数的关系.结果表明,有超过50次的谐波的转换效率在10-6以上.
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