非线性传输过程的线性算法
Linear algorithm for nonlinear beam propagation
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摘要: 基于非线性薛定谔方程的线性化理论，发展了一种计算高功率激光非线性传输的线性算法，该算法在初始光束分布满足一定条件时对近场传输问题具有相当高的精度，计算速度比常用的分步傅里叶算法快2~3个数量级。Abstract: A linear algorithm of simulation of high power laser beam propagation in nonlinear medium is given, based on the BespalovTalanov linearization theory of nonlinear Schrdinger equation. It is faster in 2～3 orders than splitstep Fourier method and more precise while the initial beam distribution is approximately uniform in near field propagation.
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Key words:
- nonlinear schrdinger equation /
- numerical algorithm /
- bintegral
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