How to create grating diffraction pattern.
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How to create a code to plot the intensity of the light I see from the grating diffraction in theory.
The graph shows only the diffraction ranking at zero. I want the graph to show the first number diffraction.
Who can see if it might go wrong? Please help me.
x = linspace(-50, 50, 500);
A = 4*W;
lambda = 632.8e-9; % m
D = 1; % Distance to the observation plane m
W = 38e-6; % slit width(m)
fx = x/(lambda*D); % frequency coordinat
I = (A^2/(lambda^2*D^2)) .* sinc(2*W*fx).^2;
figure
plot(x, I)
grid
xlabel('fx')
ylabel('Intensity')
1 个评论
Star Strider
2020-3-2
@Rose Mermate —
You quoted the code I posted in your other Question: How to create a code to plot the intensity of the light
That should do everything you want.
What part of my Answer do you need help to understand?
采纳的回答
x = linspace(-50, 50, 500);
lambda = 632.8e-9; % m
D = 1; % Distance to the observation plane m
W = 38e-6;
A = 4*W;% slit width(m)
fx = x/(lambda*D); % frequency coordinat
I = (A^2/(lambda^2*D^2)) .* sinc(2*W*fx).^2;
figure, plot(x,I)
grid
xlabel('fx')
ylabel('Intensity');
% Just repeat the same row multiple times
% For Better visualisation
grad_pattern=repelem(I,[50],[1]);
figure,imshow(grad_pattern,[]);
title('Diffraction Pattern');
8 个评论
Rose Mermate
2020-3-2
I want to have many peaks like in the picture.
KALYAN ACHARJYA
2020-3-2
What is m in the attched code?
Rose Mermate
2020-3-2
KALYAN ACHARJYA
2020-3-2
No "m" in the code
Rose Mermate
2020-3-2
KALYAN ACHARJYA
2020-3-2
编辑：KALYAN ACHARJYA
2020-3-2
Refer the book and incorporte "m" in the equation. If you explain the physics (Maths), so that we can help you to implement the same.
Prathamesh Chavan
2021-5-12
M is a order of principal maxima..
OzjaszGoldberg
2022-2-4
hi did you make it ?
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