Complete-stokes fourier-domain imaging polarimeter

摘要

An apparatus for simultaneously measuring linear and circular polarization components of light is provided, and contains no moving parts. The apparatus may include a prism assembly configured to receive collimated light and splits the light into different directions according to its polarization state. The apparatus may also include lenses configured to collimate light from an image plane to be analyzed by the prism assembly, or direct the light that is split by the prism assembly to different detectors or locations on an image plane.

主权项

1. An apparatus for an imaging system, comprising:
a Wollaston prism assembly comprising a plurality of prisms, each of the plurality of prisms configured to receive light and split the light into two different directions according to a polarization state; and a lens configured to redirect the split light from each of the plurality of prisms to respective locations on an image plane, wherein each of the plurality of prisms is cut at an angle β, resulting in an internal interface angle that is oblique to a system axis of the Wollaston prism assembly, to determine an angular deviation between orthogonal pairs of polarization states, the prism assembly further comprises a first outer prism comprising a wedge and second outer prism comprising a wedge, the wedge of the first outer prism and the wedge of the second outer prism having an angle θ, resulting in an external interface angle that is oblique to the system axis of the Wollaston prism assembly, that prevents the spit light from overlapping, and the first outer prism and the second outer prism are arranged in parallel with respect to the system axis of the Wollaston prism assembly, the system axis is a z-direction that the light propagates.