Adjustable and robust methods for polarization-dependent focusing

Opt Express. 2013 Jul 1;21(13):15538-52. doi: 10.1364/OE.21.015538.

Abstract

We present two methods for the precise independent focusing of orthogonal linear polarizations of light at arbitrary relative locations. Our first scheme uses a displaced lens in a polarization Sagnac interferometer to provide adjustable longitudinal and lateral focal displacements via simple geometry; the second uses uniaxial crystals to achieve the same effect in a compact collinear setup. We develop the theoretical applications and limitations of our schemes, and provide experimental confirmation of our calculations.

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.