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LinearBPM
这是一个简单的FFT为无电位1 +1 +1 Ð 薛定谔方程的光束传播方法。如果该软件灵活,允许引入的术语(如果是极少数需要包括色散效应高阶导数)。例如,如果一个人渴望解决的一个方程的形式:
(四/ dz的+ Ð ^ 2/dx ^ 2 - 0.25 * Ð ^ 3/dx ^ 3)== 0 Ÿ
它可以解决使用以下代码:
Ž = linspace(0,1,512)
x = linspace(-5,5,1024)
psi0 =进出口(- x的。^ 2)
Ð = D_lateral1D(十,2)-0.25 * D_lateral1D(十,3)
字段= LinearBPM(psi0,有D,Z)
凡D_lateral1D是一个函数,提供“取代”的微分算子。
这个函数是在一个非线性的BPM,我曾对(分步,谱方法等),将提交给我,当我完成他们的文件和组织功能更复杂的设置非常初期阶段。
(This is a simple FFT based beam propagation method for potential-free 1+1+1D Schrodinger equation. The software if flexible and allows to introduce high-order derivatives in the term (very handful if is needed to include dispersion effects). For example, if one desires to solve an equation in the form:
(d/dz+ d^2/dx^2- 0.25*d^3/dx^3)Y == 0
It can be solved using the following code:
z=linspace(0,1,512)
x=linspace(-5,5,1024)
psi0=exp(-x.^2)
D=D_lateral1D(x,2)-0.25*D_lateral1D(x,3)
field=LinearBPM(psi0,D,z)
Where D_lateral1D is a provided function that "replaces" the derivative operator.
This function is a very early stage in a more complex set of non-linear BPM functions that I have made (split-step, spectral methods, etc.) and I will submit them when I finish their documentation and organization.
Sorry for my English, I m eager for your comments.
)
- 2010-07-05 12:02:42下载
- 积分:1
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dongbo
驻波 行波 行驻波演示M文件,经调试,运行良好(the M.file of performing standing wave &travelling wave &standing-travelling wave)
- 2012-03-30 09:34:20下载
- 积分:1
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neural-network
利用径向基函数神经网络,完成ECG信号的非线性拟合,进而提取出胎儿心电信号(Radial basis function neural network to complete the non-linear fitting of the ECG signal, and then extract the fetal ECG)
- 2013-03-24 20:53:10下载
- 积分:1
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TSP-traveling-salesman-problem
本设计使用SOM神经网络解决TSP旅行销售员问题(The design uses SOM neural network to solve TSP traveling salesman problem)
- 2013-04-23 15:58:55下载
- 积分:1
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remotecxp
remote xp
powerfut remote control
- 2014-01-15 19:18:45下载
- 积分:1
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pso
粒子群优化算法的寻优算法,非线性函数极值寻优(Optimization algorithm of particle swarm optimization algorithm, optimization of nonlinear function extremum)
- 2020-06-21 11:00:02下载
- 积分:1
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convolution
利用此程序,可以计算出两离散序列的线性卷积和循环卷积。(calculating the linear_convolution and circular_convolution of two scattered data.)
- 2009-05-28 10:58:33下载
- 积分:1
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Planetary-problems
一天文学家要确定一棵小行星的运动轨道,他在其轨道内建立了以太阳为原点的直角坐标系,由开普勒第一定律知小行星的运动轨道为一椭圆,试确定行星的运动轨道。(One day in literature to determine the orbit of an asteroid, he set up in its orbit to the sun for the origin of the coordinate system, by Kepler s first law of motion track known asteroid is an ellipse, the orbits of planets.)
- 2015-04-20 17:33:29下载
- 积分:1
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Canny
Edge detector of Canny.
- 2009-09-17 21:06:21下载
- 积分:1
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lp_mode
各种传输设备波导中电磁场的LP01模式的matlab模拟(All transmission equipment in the electromagnetic field of the LP01 mode waveguide of matlab simulation)
- 2010-09-03 12:56:40下载
- 积分:1