Work

Dye-doped liquid crystal composite for real-time holography

Year: 1996

Type: article

Abstract: In this paper we report the results of dynamic phase grating formation in an anthraquinone derivative dichroic dye-doped nematic liquid crystal in which an external DC electric field was used to change the planar alignment of liquid crystal molecules into a near homeotropic one. This field was also needed to produce an efficient grating via photoconductivity-induced molecular reorientation in a degenerate two-wave mixing experiment with He - Ne (632.8 nm) laser light serving as a low power excitation source. The characteristic of the measured effect shows that the mechanism of grating formation is evidently a non-photorefractive one. A diffraction efficiency of up to 20% has been measured in the system. Fast hologram recording and erasing times (1 ms) make this system attractive for image processing applications.

Source: Pure and Applied Optics Journal of the European Optical Society Part A

DOI: 10.1088/0963-9659/5/6/006

Authors: S Bartkiewicz, A Januszko, A Miniewicz, J Parka

Institutions: Wrocław University of Science and Technology, University of Wrocław, Military University of Technology in Warsaw

Language: English

Topic: Photorefractive and Nonlinear Optics

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

OpenAlex ID: W1964792425

FWCI: 1.768

Cites: 29

Cited by: 51

Related to: 10