Can circularly polarized light resonate in a Fabry-Perot cavity?
Physics Asked by intotheaxiverse on December 16, 2020
I am curious as to how a standing wave of circularly polarized light may be forced to resonate in a Fabry Perot cavity as in this paper – https://doi.org/10.1103/PhysRevD.98.035021
I know that in a standard Fabry Perot cavity with incident linearly polarized light, the standing wave produced has the magnetic and electric field components 90 degrees out of phase (and of course perpendicular).
Is it also true that a circularly polarized beam resonant in a Fabry Perot cavity capped with quarter wave plates has a structure where the magnetic field component is 90 degrees out of phase with the electric field component?
One Answer
Circularly polarised light is two linearly polarised electromagnetic waves with their electric fields at right angles to one another and $pi/2$ out of phase.
So if it works out for each component of the electric/magnetic field what does superposition imply?
Answered by Farcher on December 16, 2020
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