Broadband Circular Polarizer based on Cholesteric Liquid Crystal and Cholesteric Polymer Composite Films

Author

Zhou, Ying ; Chen, Kuan-Ming ; Huang, Yuhua ; Wu, Shin-Tson

Author_Institution

Univ. of Central Florida, Orlando

fYear

2007

fDate

21-25 Oct. 2007

Firstpage

210

Lastpage

211

Abstract

In this paper, a cholesteric liquid crystal (CLC) and cholesteric monomer mixture are used for broadband circular polarizer, instead of pure cholesteric polymer. In this case, the birefringence and, thus, the bandwidth of each film are both increased. More importantly, unlike the solid CLC polymeric films, diffusion process can be induced in this CLC and CLC polymer composite film so that broadband reflection is achieved as a result of pitch gradient.

Keywords

birefringence; cholesteric liquid crystals; composite materials; diffusion; light polarisation; liquid crystal polymers; optical polarisers; polymer films; reflectivity; bandwidth; birefringence; broadband circular polarizer; broadband reflection; cholesteric liquid crystal; cholesteric monomer mixture; cholesteric polymer composite films; diffusion; pitch gradient; Birefringence; Crystalline materials; Curing; Liquid crystal displays; Liquid crystal polymers; Optical films; Optical polarization; Optical reflection; Polymer films; Substrates;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Society, 2007. LEOS 2007. The 20th Annual Meeting of the IEEE

Conference_Location

Lake Buena Vista, FL

ISSN

1092-8081

Print_ISBN

978-1-4244-0925-9

Electronic_ISBN

1092-8081

Type

conf

DOI

10.1109/LEOS.2007.4382351

Filename

4382351