A realistic versatile polarizer model

01.01.2014, 00:00

Newsletter 7

Polarizers are key components in both classical and quantum optics. Generally a polarizer is understood to project the light field onto a particular state of polarization. While the action of a polarizer is well known for normal incidence, surprisingly enough the behaviour of highly tilted polarizers is not so well understood. In connection with this, we have experimentally studied a polarizer made of oriented elongated nanoparticles embedded in a glass substrate. Close to the resonance, the electric field component along the long axes of the particles is scattered and eventually absorbed. We refer to the long particle axis as the polarizer's absorbing axis. The projection of this global absorbing axis onto the local plane of the electric field can be interpreted as an effective absorbing axis. An intuitive rule of thumb states that the field component parallel to this effective absorbing axis must vanish. We applied this model to account for the physical nature of the nanoparticle polarizer, obtaining excellent agreement with experimental data.

Contact: jan.korger(at)mpl.mpg(dot)de
Group: Leuchs Division
Reference: Opt. Express 21, pp. 27032–27042 (2013).