|Jul26-09, 08:53 PM||#1|
Poincare sphere and Degree of polarization
Can someone explain the concept of "Poincare sphere"? What's the relationship between the Poincare Sphere and the Degree of polarization of EM fields?
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|Jul27-09, 07:20 AM||#2|
The Poicare sphere is a way of describing the 4-component Stokes vector:
http://en.wikipedia.org/wiki/Polarization (about 1/2-way down)
The state of polarization is represented by a point on the sphere. Note: for fully polarized light, S_0 = 1 and the point lies on the surface of the sphere; partially polarized light has S_0<1 and so the point lies within the sphere.
Going from the Stokes formulation to the Jones formulation can be a little tricky:
Since the Stokes/Mueller forumlation is inherently statistical in nature, while the Jones matrices only hold for completely polarized light.
Does that help?
|Jul28-09, 01:53 AM||#3|
Thanks Andy. I will refer the wikipedia for more info.
|poincare sphere, polarization|
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