Voltage-Controlled Switching of Strong Light-Matter Interactions Using Liquid Crystals

Overview

Journal Chemistry

Specialty Chemistry

Date 2017 Nov 21

PMID 29155469

Citations 12

Authors

Manuel Hertzog

Per Rudquist

James A Hutchison

Jino George

Thomas W Ebbesen

Karl Borjesson

Affiliations

Soon will be listed here.

Abstract

We experimentally demonstrate a fine control over the coupling strength of vibrational light-matter hybrid states by controlling the orientation of a nematic liquid crystal. Through an external voltage, the liquid crystal is seamlessly switched between two orthogonal directions. Using these features, for the first time, we demonstrate electrical switching and increased Rabi splitting through transition dipole moment alignment. The C-N vibration on the liquid crystal molecule is coupled to a cavity mode, and FT-IR is used to probe the formed vibropolaritonic states. A switching ratio of the Rabi splitting of 1.78 is demonstrated between the parallel and the perpendicular orientation. Furthermore, the orientational order increases the Rabi splitting by 41 % as compared to an isotropic liquid. Finally, by examining the influence of molecular alignment on the Rabi splitting, the scalar product used in theoretical modeling between light and matter in the strong coupling regime is verified.

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