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Detection of optical activity with diode-integrated hyperbolic metasurfaces.
Biomedical Optics Express 2017 December 2
We present an analytical technique for designing integrated polarized light-emitting diodes (LEDs) and polarization-sensitive photodiodes (PD) based on hyperbolic metasurfaces (HMS) for the detection of optical activity. Leveraging effective medium theory and the scattering matrix method, we first derive the conditions for optimizing the transmission efficiency of an LED-integrated HMS and the absorption efficiency of a PD-integrated HMS. We then propose using a differential detection technique with orthogonally oriented PD-integrated HMS to measure optical activity in an extremely compact volume. Finally, we perform an estimation of system performance and find that, relative to state-of-the-art polarimeters, a reduction of complexity can be achieved without sacrificing resolution. The results hold merit for reducing the size and cost of polarimeters and associated polarimetric sensing systems, which play vital roles in the pharmaceutical and biomedical sciences.
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