Control of diffraction from permanent gratings in dye doped liquid crystals

Author

Kaczmarek, M. ; Cudney, R.S.

Author_Institution

Dept. of Phys. & Astron., Southampton Univ., UK

fYear

2001

fDate

11-11 May 2001

Firstpage

397

Lastpage

398

Abstract

Summary form only given. Photorefractive-like liquid crystals are one of the most efficient optical nonlinear materials developed so far. Their thin film format (typically between 10-25 /spl mu/m), ideal for integrated optics applications, is accompanied by large diffraction efficiencies and high coupling coefficients.We observed that permanent gratings can be created in dye-doped photorefractive liquid crystals and their diffraction efficiency controlled by electric field. The gratings were written in 12 /spl mu/m thick 5CB liquid crystal cells doped with a relatively high concentration (above 1%) of a methyl red dye.

Keywords

diffraction gratings; dyes; electro-optical devices; liquid crystal devices; molecular orientation; nonlinear optics; optical films; photorefractive materials; 10 to 25 micron; 12 micron; 5CB liquid crystal cells; diffraction efficiency; dye doped liquid crystals; dye-doped photorefractive liquid crystals; electric field; high coupling coefficient; integrated optics; large diffraction efficiencies; methyl red dye; optical nonlinear materials; permanent gratings; photorefractive-like liquid crystals; thin film format; Crystalline materials; Diffraction gratings; Integrated optics; Liquid crystals; Nonlinear optics; Optical diffraction; Optical films; Optical materials; Photorefractive materials; Transistors;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 2001. CLEO '01. Technical Digest. Summaries of papers presented at the Conference on

Conference_Location

Baltimore, MD, USA

Print_ISBN

1-55752-662-1

Type

conf

DOI

10.1109/CLEO.2001.947965

Filename

947965