Electro-optic beam manipulation through photorefractive needles

Opt Lett. 2002 Dec 15;27(24):2188-90. doi: 10.1364/ol.27.002188.

Abstract

We demonstrate electro-optic spatial two-dimensional mode switching in a bulk sample of potassium lithium tantalate niobate. Spatial confinement, mode coupling, and electro-optic functionality are mediated by two photorefractive needle solitons of opposite electroholographic charges embedded together in their anisotropic lobular structure.