Parallel Optical Data Storage Based on Polarization Addressed Amplitude Modulation in Dye-Doped Liquid Crystals

Author

Wei-Chia Su ; Wen-Bin Hung ; Li-Peng Chen

Author_Institution

Grad. Inst. of Photonics, Nat. Changhua Univ. of Educ., Changhua, Taiwan

Volume

19

Issue

6

fYear

2013

fDate

Nov.-Dec. 2013

Firstpage

28

Lastpage

32

Abstract

A technique of parallel storage in dye-doped liquid crystals (DDLCs) is presented in this study. Parallel recording is implemented by imaging a 2-D pattern on the DDLC film. An s -polarized laser beam with wavelength of 532 nm was used as the recording beam and the same laser beam with p-polarization was used as the erasing beam. Recording and erasing mechanism is based on the polarization induced amplitude modulation. Pixels numbers of each recorded page image signal on the DDLC is 1024 × 768 pixels with 2 μm pixel spacing.

Keywords

dyes; laser beams; liquid crystals; liquid films; optical information processing; optical modulation; 2D pattern imaging; DDLC film; dye-doped liquid crystals; p-polarization laser beam; page image signal; parallel optical data storage; parallel recording; polarization addressed amplitude modulation; s-polarized laser beam; wavelength 532 nm; Holographic optical components; Holography; Laser beams; Liquid crystals; Measurement by laser beam; Optical imaging; Optical polarization; Optical data storage; amplitude modulation; dye-doped liquid crystals;

fLanguage

English

Journal_Title

Selected Topics in Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

1077-260X

Type

jour

DOI

10.1109/JSTQE.2013.2278219

Filename

6605618