Nonlinear Chiral Meta-Mirrors: Light Polarization Ultra Ultra Switch Technology

Abstract image

Photonic nanostructures that realize the ultrasound shift of light polarization are needed to advance the field of optical information processing. The unprecedented flexibility of light manipulation metaphor types makes them a promising candidate for active polarization control. However, due to the absence of a fast and large refractive index change in optical materials, the photonic metadata that can be used to modify the ultrasound polarization remains an error. Here, an ultrathin non-linear chiral meta-mirror consisting of amorphous silicon (α-Si) split-ring resonators on top of the silver backbone is shown as a possible platform for picosecond all-optical polarization transmitting infrared light to picojoule-per resonator pump energies. This success was made possible by the high quality factor resonances of the proposed meta-atoms, allowing the mirror to exhibit strong chiropractic and enantioselectivity. Experimental results confirm that our meta-mirrors can be used to facilitate high-speed and energy efficient polarization and state modulators.