On widening the angular existence domain for Dyakonov surface waves using the Pockels effect

TL;DR

This paper demonstrates how the Pockels effect can be used to significantly expand the angular propagation domain of Dyakonov surface waves at an interface, enabling more flexible control of their propagation directions.

Contribution

The study introduces a method to widen the angular existence domain of Dyakonov surface waves using the Pockels effect, which was previously limited to narrow ranges.

Findings

Angular propagation range increased by over ten times.

Dynamic control of DSW propagation directions achieved.

Potential for improved surface wave-based photonic devices.

Abstract

The propagation of Dyakonov surface waves (DSWs) at the planar interface between an isotropic material and a linear electro-optic birefringent material can be dynamically controlled using the Pockels effect. The range of directions for DSW propagation has been previously found to be rather narrow. By careful choice of various parameters, this range of directions can be increased by more than an order of magnitude.