- #1
Nick.
- 15
- 0
Hi,
Why is that when a diffraction pattern is created through small circular opening you achieve a diffraction pattern like this;
But when we see images of a slot we see this;
From; http://hyperphysics.phy-astr.gsu.edu/hbase/phyopt/fraungeo.html#c1
Notice how the diffraction is linear - not vertical or circular. If the same method is used in calculating the slot diffraction as you use in the circle then then slot diffraction should also be radial (but stretched to account for the slot height),
At first I thought this was because of the laser polarisation but since a laser also creates the circular image then this must not be the case??
Why is that when a diffraction pattern is created through small circular opening you achieve a diffraction pattern like this;
But when we see images of a slot we see this;
From; http://hyperphysics.phy-astr.gsu.edu/hbase/phyopt/fraungeo.html#c1
Notice how the diffraction is linear - not vertical or circular. If the same method is used in calculating the slot diffraction as you use in the circle then then slot diffraction should also be radial (but stretched to account for the slot height),
At first I thought this was because of the laser polarisation but since a laser also creates the circular image then this must not be the case??