A room-temperature electrical-field-enhanced ultrafast switch in organic microcavity polariton condensates

TL;DR

This paper demonstrates a room-temperature, ultrafast polariton condensate switch enhanced by an electric field in an organic microcavity, promising for integrated photonic devices.

Contribution

It introduces an electric field method to significantly improve polariton condensation and switching performance in organic microcavities at room temperature.

Findings

Enhanced emitted intensity and lower condensation threshold with electric field

Realization of sub-nanosecond electrically controlled polariton switch

Theoretical evidence of increased exciton-polariton interaction and lifetime

Abstract

Integrated electro-optical switches are essential as one of the fundamental elements in the development of modern optoelectronics. As an architecture for photonic systems, exciton polaritons, that are hybrid bosonic quasiparticles that possess unique properties derived from both excitons and photons, have shown much promise. For this system, we demonstrate a significant improvement of emitted intensity and condensation threshold by applying an electric field to a microcavity filled with an organic microbelt. Our theoretical investigations indicate that the electric field makes the excitons dipolar and induces an enhancement of the exciton-polariton interaction and of the polariton lifetime. Based on these electric field induced changes, a sub-nanosecond electrical-field-enhanced polariton condensate switch is realized at room temperature, providing the basis for developing an on-chip integrated photonic device in the strong light-matter coupling regime.