Calculating Intensity of Fringes with Young's Formula | Fringe Width Calculation

[naima]

Hi all

I am looking for the intensity of the fringes on the screen behind two slits with a given width.
I thought it would be easy to find with google but no.

 

[sophiecentaur]

Google 'two slit interference'. That should bring on an avalanche of hits. The Hyperphysics site is usually a good source of formulae, although it is sometimes a bit short on chatty explanations (PF is good for that).

 

[naima]

I found a good paper on the subject

 

[sophiecentaur]

That looks to be a good source.
If it suits your level then it's perfect!

 

[PJC01]

Hello, calculating the intensity of fringes in Young's double slit experiment is a fundamental concept in optics. The intensity of the fringes can be calculated using Young's formula, which relates the fringe width to the wavelength of light, distance between the slits, and distance from the slits to the screen. This formula is given by I = I0cos^2(πd/λL), where I0 is the intensity at the center of the screen, d is the distance between the slits, λ is the wavelength of light, and L is the distance from the slits to the screen. By plugging in these values, you can calculate the intensity of the fringes on the screen. I suggest consulting a textbook or reliable online resource for a step-by-step guide on how to use Young's formula for fringe width calculation. Additionally, it is important to note that the intensity of the fringes can also be affected by factors such as the coherence of the light source and any obstructions in the path of the light. I hope this helps.