Vector diffractive optical element as a full-Stokes analyzer

The real-time characterization of the polarization state of a light beam is of importance for a variety of applications in Optics and Photonics. We have designed a device that includes a Vector Diffractive Optical Element (VDOE) to determine the polarization state of an incident light beam. The device is able to simultaneously evaluate the four Stokes parameters of the light under analysis. The VDOE is sectorized into several Fresnel zone plates, enabling a compact arrangement and facilitating optoelectronical integration. We have also developed a procedure to remove diffractive effects and systematic errors. From the simulated results, our device is able to identify any polarization incident state with an averaged uncertainty of 0.006%. Finally, we have experimentally verified the VDOE with non-ideal polarization elements to further validate and test our proposed design. The averaged uncertainty of our experimental realization is 3.33%.Sección Deptal. de Óptica (Óptica)Depto. de ÓpticaFac. de Óptica y OptometríaFac. de Ciencias FísicasTRUEMinisterio de Economía , Industria y Competitividad de EspañaMinisterio de Ciencia e Innovación de EspañaUnión Europea - Fondos FEDERpu

Self-calibrated four-axis high-precision polarimeter

We present a new method for calibrating a 4 stepper-motors polarimeter. This method does not require perfect polarizing elements or well-known samples. Experimental results have been obtained with errors lower than 0.1%