Coulomb-corrected strong-field approximation (CCSFA), which integrates Coulomb potential and the interference effects, is a semiclassical method successful in the study of atomic strong-field ionization. However, it is difficult to numerically solve the saddle-point equation describing tunnelling in the CCSFA, especially for complex laser fields such as elliptically or orthogonally polarized two-color laser fields. In this work, we propose an efficient method based on the genetic algorithm (CCSFA-GA) to overcome this difficulty. The accuracy of our method is verified by comparing our result with the calculation of the standard CCSFA on a hydrogen atom, subjected to an intense laser field. Moreover, we show that the result of the numerical solution of the time-dependent Schrödinger equation with an elliptically polarized laser field can be well reproduced by the CCSFA-GA.

中文翻译：

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基于遗传算法的库仑校正强场逼近

集成了库仑势和干扰效应的库仑校正强场近似（CCSFA）是成功研究原子强场电离的一种半经典方法。但是，很难用数值方法求解描述CCSFA中隧穿的鞍点方程，尤其是对于复杂的激光场，例如椭圆或正交偏振的双色激光场。在这项工作中，我们提出了一种基于遗传算法（CCSFA-GA）的有效方法来克服这一困难。通过将我们的结果与经受强激光场的氢原子上标准CCSFA的计算结果进行比较，验证了我们方法的准确性。此外，