Simulating the Interference Pattern of Fraunhofer Diffraction

[JimThomas]

http://img42.imageshack.us/img42/8280/oahh.png
http://img109.imageshack.us/img109/4669/1ypb.png
http://img208.imageshack.us/img208/8804/32kf.png

 

[jfizzix]

My first guess is that maybe the slit height was not specified to be significantly larger than the slit width giving fringing effects in both dimensions. Is this the case?

Also you may want to recheck your units to be sure you are indeed in the far field where the Fraunhofer approximations are valid.