Photo-isomerization fronts in dye-doped nematic liquid crystals

Odent, V; et al.

Abstract

An experimental study of the photo-isomerization dynamics in dye-doped nematic crystals is reported, which shows that, when the sample is illuminated by a Gaussian beam, and for high enough input power, a transition from the nematic to the isotropic phase takes place in the illuminated area. The two phases are spatially connected via a front propagating outward from the center of the beam and following the local intensity profile and thus inducing a photo-controlled optical aperture. The optical intensity and temperature fields on the sample follow the same dynamical profile. The front dynamics is described by a phenomenological bi- stable model with an inhomogeneous control parameter, directly related to the beam intensity profile. (C) 2014 Optical Society of America

Más información

Título según WOS: Photo-isomerization fronts in dye-doped nematic liquid crystals
Título según SCOPUS: Photo-isomerization fronts in dye-doped nematic liquid crystals
Título de la Revista: OPTICS LETTERS
Volumen: 39
Número: 7
Editorial: OPTICAL SOC AMER
Fecha de publicación: 2014
Página de inicio: 1861
Página final: 1864
Idioma: English
URL: http://www.opticsinfobase.org/abstract.cfm?URI=ol-39-7-1861
DOI:

10.1364/OL.39.001861

Notas: ISI, SCOPUS