Paper 13109-66
Paper 13109-66
A highly transmissive polarization converting active metasurface using liquid crystal reorientation
21 August 2024 • 2:30 PM - 2:45 PM PDT | Conv. Ctr. Room 6C
Abstract
We report on the active control of transmissive polarization switching of near infrared light in two dimensions (2D) using liquid crystal (LC) infiltrated Ti3O5 nanostructures with > 50% efficiency in experiment. Our device consists of a periodic array of elliptical Ti3O5 pillars submerged in a thin (~ 2 um) LC layer and supports overlapping electric and magnetic dipoles under linearly polarized incidence. Using a biased photoactive top contact, we manipulate light in 2D by patterning a 435 nm pump laser on its surface to locally modulate LCs in illuminated areas. This work can find applications in solid-state programmable beam shaping and steering.
Presenter
Jared Sisler
Caltech (United States)
Jared Sisler is a PhD candidate in Applied Physics at Caltech in the group of Prof. Harry Atwater. He obtained his Bachelors in Applied Science at the University of Waterloo in Canada. His current research focuses on the design and fabrication of novel active metasurfaces for adaptive beam shaping and steering.