Directional optical switching and transistor functionality using optical parametric oscillation in a spinor polariton fluid
Abstract
Over the past decade, spontaneously emerging patterns in the density of polaritons in semiconductor microcavities were found to be a promising candidate for all-optical switching. But recent approaches were mostly restricted to scalar fields, did not benefit from the polariton's unique spin-dependent properties, and utilized switching based on hexagon far-field patterns with 60{\deg} beam switching (i.e. in the far field the beam propagation direction is switched by 60{\deg}). Since hexagon far-field patterns are challenging, we present here an approach for a linearly polarized spinor field, that allows for a transistor-like (e.g., crucial for cascadability) orthogonal beam switching, i.e. in the far field the beam is switched by 90{\deg}. We show that switching specifications such as amplification and speed can be adjusted using only optical means.
Keywords
Cite
@article{arxiv.1707.04925,
title = {Directional optical switching and transistor functionality using optical parametric oscillation in a spinor polariton fluid},
author = {Przemyslaw Lewandowski and Samuel M. H. Luk and Chris K. P. Chan and P. T. Leung and N. H. Kwong and Rolf Binder and Stefan Schumacher},
journal= {arXiv preprint arXiv:1707.04925},
year = {2018}
}