victorliu / S4

Stanford Stratified Structure Solver - Electromagnetic simulator for layered periodic structures
http://www.stanford.edu/group/fan/S4/
GNU General Public License v2.0
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Which function can be used to set the incident plane wave to be circularly polarized? #104

Closed WangL3i closed 2 years ago

WangL3i commented 2 years ago

As the title said. How to set Left Circular Polarization and Right Circular Polarization?

gevero commented 2 years ago

You have to choose s and p polarization amplitudes with correct magnitude and phase. Just look at the wikipedia jones calculus page to figure it out.

Johny-Leo commented 2 years ago

It can be done by setting the s- and p- polarization mag. and phase as such: s- (1+ i π/2), and p- (1 - i π/2) . But keep in mind that the whole field intensity and power are the superposition of the two polarizations, not 1 as in a single pol. case any more.