利用傅里叶频谱分析方法模拟各种衍射屏的衍射图样

E ? (P )=K ?d∑

F (θ,θ0)E 0(Q )exp?(ikr)/r

∑

E ? (p )=?i

r

0?E

? (Q)e ikr d∑

E (x,y )=e jkr 0

iλr 0?E 0(x 0,y 0)exp?{jk

2r 0((x ?x 0)2+(y ?y o )2)}dxdy

F (u,v )=?f (x,y )exp(?i2π(ux +vy ))dxdy

?(x ?x 0?,y ?y 0)=e jkr 0iλr 0?exp?{jk 2r 0

((x ?x 0)2+(y ?y o )2)}dxdy

E (x,y )=E 0(x,y )?h(x,y)

E (x,y )=

F ?1(F((E 0(x,y ))F(?(x,y)))

function varargout = yanshe_beta1(varargin)

% YANSHE_BETA1 MATLAB code for yanshe_beta1.fig

% YANSHE_BETA1, by itself, creates a new YANSHE_BETA1 or raises the existing

% singleton*.

%

% H = YANSHE_BETA1 returns the handle to a new YANSHE_BETA1 or

the handle to

% the existing singleton*.

%

% YANSHE_BETA1('CALLBACK',hObject,eventData,handles,...) calls

the local

% function named CALLBACK in YANSHE_BETA1.M with the given input arguments.

%

% YANSHE_BETA1('Property','Value',...) creates a new YANSHE_BETA1 or raises the

% existing singleton*. Starting from the left, property value pairs are

% applied to the GUI before yanshe_beta1_OpeningFcn gets called.