Optical modulators are essential in many optoelectronics applications such as energy harvesting, sensor and imaging apparatuses. In this context, nonlinear photon conversion processes represent a valid opportunity to increase the logic capabilities of these devices. Here, we study the directionality of the second harmonic (SH) signal emitted by a dielectric metasurface made of AlGaAs nanodisks embedded into a liquid crystal matrix. Notably, we numerically demonstrate the modulation of the SH total power and the emission pattern signal coming from the proposed metasurface as a function of the liquid crystal orientation.
Tunable Second Harmonic Generation in AlGaAs Metasurface through Reconfigurable Liquid Crystal
Rocco D.;Carletti L.;Caputo R.;De Angelis C.
2020-01-01
Abstract
Optical modulators are essential in many optoelectronics applications such as energy harvesting, sensor and imaging apparatuses. In this context, nonlinear photon conversion processes represent a valid opportunity to increase the logic capabilities of these devices. Here, we study the directionality of the second harmonic (SH) signal emitted by a dielectric metasurface made of AlGaAs nanodisks embedded into a liquid crystal matrix. Notably, we numerically demonstrate the modulation of the SH total power and the emission pattern signal coming from the proposed metasurface as a function of the liquid crystal orientation.File in questo prodotto:
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