Hybrid silicon-organic Huygens' metasurface for phase modulation

TL;DR

This paper proposes a silicon-organic Huygens' metasurface electro-optic modulator capable of full 2π phase modulation with high transmission efficiency, promising advancements in high-speed spatial light modulation.

Contribution

It introduces a novel metasurface design immersed in high-performance electro-optic molecules enabling near-full phase coverage and high-speed modulation at 1330 nm.

Findings

Achieves 140° phase modulation at -100 to 100 V

Maintains high transmission efficiency between 0.66 and 0.8

Operates effectively at 1330 nm wavelength

Abstract

Spatial light modulators have desirable applications in sensing and free space communication because they create an interface between the optical and electronic realms. Electro-optic modulators allow for high-speed intensity manipulation of an electromagnetic wavefront. However, most surfaces of this sort pose limitations due to their ability to modulate intensity rather than phase. Here we investigate an electro-optic modulator formed from a silicon-organic Huygens' metasurface. In a simulation-based study, we discover a metasurface design immersed in high-performance electro-optic molecules that can achieve near-full resonant transmission with phase coverage over the full 2$\pi$ range. Through the electro-optic effect, we show 140$^\circ$ (0.79$\pi$) modulation over a range of -100 to 100 V at 1330 nm while maintaining near-constant transmitted field intensity (between 0.66 and 0.8). These results potentiate the fabrication of a high-speed spatial light modulator with the resolved parameters.