1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Intensity Distribution of 4 Slit diffraction grating using convolution

  1. Apr 9, 2012 #1
    Hi all,

    I am trying figure out this diffraction problem.

    I have to find the intensity distribution of a four slit fraunhofer diffraction grating using the convolution theorem. I can do the math and all...but I do not know how to start it! The only information I am given is the slits have a width of a = 10um and the impinging light has a wavelength of 633nm.
    Since the slits have a defined width value, I cannot use the comb function and a rectangular function for my convolution. So, what functions should I be using??

  2. jcsd
  3. Apr 9, 2012 #2
    A sum of rectangular functions. 4 of them. you can probably make a convolution with 4 delta functions and one rectangular function to create those.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook