NONLOCAL OPTICAL PROPAGATION IN NONLINEAR NEMATIC LIQUID CRYSTALS

Author:

PECCIANTI MARCO1,CONTI CLAUDIO1,ASSANTO GAETANO1,DE LUCA ANTONIO2,UMETON CESARE2

Affiliation:

1. NOOEL — Nonlinear Optics and OptoElectronics Laboratory, National Institute for the Physics of Matter (INFM), University Roma Tre, Via della Vasca Navale 84, 00146 Rome, Italy

2. LICRYL — Liquid Crystal Laboratory, National Institute for the Physics of Matter (INFM), University of Calabria, 87036 Rende (CS), Italy

Abstract

Optical propagation in nematic liquid crystals is characterized by a large and highly-nonlocal Kerr-like nonlinearity. We investigate the fundamental role played by spatial nonlocality in nonlinear optical propagation, and develop a model able to predict the main features of spatial solitons and modulational instability in nematic liquid crystals. The model unifies solitons in physical systems exhibiting different degrees of nonlocality, disclosing a connection between nonlocal solitons and parametric solitons in quadratic media. Finally, soliton breathing as well as other characteristics of nonlocal propagation are experimentally demonstrated in a specifically-engineered liquid crystal cell.

Publisher

World Scientific Pub Co Pte Lt

Subject

Physics and Astronomy (miscellaneous),Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials

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