An all-dielectric metasurface polarimeter

• URL: http://arxiv.org/abs/2203.05590v1
• Date: Thu, 10 Mar 2022 19:05:51 GMT
• Title: An all-dielectric metasurface polarimeter
• Authors: Yash D. Shah, Adetunmise C. Dada, James P. Grant, David R. S. Cumming, Charles Altuzarra, Thomas S. Nowack, Ashley Lyons, Matteo Clerici and Daniele Faccio
• Abstract summary: We present an all-dielectric meta-polarimeter for direct measurement of any arbitrary polarization states from a single unit-cell design. By engineering a completely asymmetric design, we obtained a metasurface that can excite eigenmodes of the nanoresonators. The unique diffraction patterns are quantified into Stokes parameters with a resolution of 5$circ$ and with a polarization state fidelity of up to $99pm1$%.
• Score: 0.8937790536664089
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The polarization state of light is a key parameter in many imaging systems. For example, it can image mechanical stress and other physical properties that are not seen with conventional imaging, and can also play a central role in quantum sensing. However, polarization is more difficult to image and polarimetry typically involves several independent measurements with moving parts in the measurement device. Metasurfaces with interleaved designs have demonstrated sensitivity to either linear or circular/elliptical polarization states. Here we present an all-dielectric meta-polarimeter for direct measurement of any arbitrary polarization states from a single unit-cell design. By engineering a completely asymmetric design, we obtained a metasurface that can excite eigenmodes of the nanoresonators, thus displaying a unique diffraction pattern for not only any linear polarization state but all elliptical polarization states (and handedness) as well. The unique diffraction patterns are quantified into Stokes parameters with a resolution of 5$^{\circ}$ and with a polarization state fidelity of up to $99\pm1$%. This holds promise for applications in polarization imaging and quantum state tomography.

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