Patent ID: 9541776
Date: 2017-01-10
CPC Classifications: G02B,G02F

Claim:
1. An optical assembly, comprising: a polarization beam splitter wedge; a Faraday rotating crystal; and a path exchange mirror, wherein the polarization beam splitter wedge, the Faraday rotating crystal and the path exchange mirror are arranged such that, as an incoming collimated optical beam passes through the polarization beam splitter wedge, the optical beam emerges as two non-parallel orthogonally polarized output beams, such that: wherein, as the two orthogonally polarized output beams pass through the polarization beam splitter wedge in opposite directions, 90° polarization rotated components of the two orthogonally polarized output beams recombine and emerge as one beam in a reverse direction with respect to the incoming collimated optical beam, with polarization rotated 90° relative to a polarization of the incoming collimated optical beam while non-rotated components of the two orthogonally polarized output beams emerge at an angle relative to the incoming collimated optical beam and are scattered and subsequently isolated.