Spectropolarimetric Characterization of Vortex Optics

Vortex retarders are optical retarders with a uniform retardance and fast axis orientation that varies azimuthally, which generates a Laguerre-Gaussian beam. Their spectropolarimetric properties are largely unknown. This paper reports the Mueller matrix and polarimetric properties of a vortex retarder measured over wavelength range 300nm-1100nm.