Pancharatnam-Berry phase of optical systems

Opt Lett. 2011 Apr 1;36(7):1143-5. doi: 10.1364/OL.36.001143.

Abstract

We present simple closed-form expressions for evaluating the overall and the Pancharatnam-Berry phase introduced by an optical system with either orthogonal or nonorthogonal eigenpolarizations. The formulas provide a meaningful connection with the Pancharatnam-Berry phase associated with nonclosed paths on the Poincaré sphere.