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Can circularly polarized light interfere with linearly polarized

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Albert V
#1
Aug10-11, 11:17 AM
P: 26
Can circularly polarized light interfere with linearly polarized light?
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chrisbaird
#2
Aug10-11, 12:21 PM
P: 617
Yes. You can think of circularly polarized light as the coherent sum of two orthogonal, linearly polarized waves that are 90 degrees out of phase. So the other linearly polarized wave will interfere with one of the components.
clem
#3
Aug10-11, 12:44 PM
Sci Advisor
P: 1,261
The two beams would have to come from splitting single beam.

y33t
#4
Aug11-11, 11:57 AM
P: 107
Can circularly polarized light interfere with linearly polarized

Quote Quote by clem View Post
The two beams would have to come from splitting single beam.
Why ?
clem
#5
Aug11-11, 01:28 PM
Sci Advisor
P: 1,261
The two interfering beams must be coherent. Two independent beams would have incoherent phase relations.
y33t
#6
Aug11-11, 01:58 PM
P: 107
Quote Quote by clem View Post
The two interfering beams must be coherent. Two independent beams would have incoherent phase relations.
They can be coherent and belong to different identical sources ?
Claude Bile
#7
Aug12-11, 08:56 AM
Sci Advisor
P: 1,477
Coherence is a bit of a red herring here. Do the Jones calculus and you can see quite clearly that a CP wave and a LP wave can interfere (or indeed, must interfere if they overlap spatially).

Claude.


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