Predicting a diffraction pattern without the limiting assumption

In summary, to predict a diffraction pattern without limiting assumptions, we can use the Fourier transform method which takes into account the entire wavefront and does not make any assumptions about the shape or size of the diffracting object. Some common limiting assumptions include assuming the diffracting object is a single, point-like source or a simple, two-dimensional shape. However, using the Fourier transform method, we can accurately predict more complex diffraction patterns and gain a more accurate understanding of the phenomenon. There may still be limitations, such as experimental error and the need for advanced mathematical knowledge and resources.
  • #1
cosgriffc
1
0
Hello all. I have a relatively simple question. I have learned very recently about wave optics and the resulting diffraction patterns. The experiment by Thomas Young was used to explain the topic and the equations were solved with the assumption that L >> d >> lambda. I was curious how one would determine a pattern without this assumption as it was never discussed in class and all the pages I find online explain the equations using this assumption.
 
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  • #2
cosgriffc, Diffraction using the assumption L >> d is called Fraunhofer diffraction. Otherwise without this assumption its called Fresnel diffraction.
 

1. How can we predict a diffraction pattern without making any limiting assumptions?

To predict a diffraction pattern without limiting assumptions, we can use a more advanced mathematical approach called the Fourier transform. This method takes into account the entire wavefront and does not make any assumptions about the shape or size of the diffracting object.

2. What are some common limiting assumptions when predicting a diffraction pattern?

Some common limiting assumptions when predicting a diffraction pattern include assuming the diffracting object is a single, point-like source or that the diffracting object is a simple, two-dimensional shape. These assumptions can lead to inaccurate predictions and limit our understanding of the phenomenon.

3. Can we accurately predict a diffraction pattern without making any assumptions?

Yes, using the Fourier transform method, we can accurately predict a diffraction pattern without making any assumptions. This method takes into account the entire wavefront and allows for a more precise prediction of the diffraction pattern.

4. What are the benefits of predicting a diffraction pattern without limiting assumptions?

Predicting a diffraction pattern without limiting assumptions allows for a more accurate understanding of the phenomenon. It also allows for the prediction of more complex diffraction patterns that cannot be accurately described using limiting assumptions.

5. Are there any limitations to predicting a diffraction pattern without limiting assumptions?

While the Fourier transform method allows for more accurate predictions, it can still be limited by factors such as experimental error or complex diffraction patterns that cannot be accurately described by mathematical models. Additionally, this method may require more advanced mathematical knowledge and computational resources.

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