Dependence of the molecular reorientation on the direction of incident light in azo-dye doped liquid crystals

Luogen Deng; Guohui Wang; Junliang Zhang; Liyuan Luo; Bin Shao; Yunhong Zhang

doi:10.1117/12.667642

26 January 2006 Dependence of the molecular reorientation on the direction of incident light in azo-dye doped liquid crystals

Luogen Deng, Guohui Wang, Junliang Zhang, Liyuan Luo, Bin Shao, Yunhong Zhang

Author Affiliations +

Proceedings Volume 6030, ICO20: Display Devices and Systems; 60300T (2006) https://doi.org/10.1117/12.667642
Event: ICO20:Optical Devices and Instruments, 2005, Changchun, China

Abstract

This paper investigates an optical reorientation process of azo-dye doped liquid crystals and explains the dependence of the enhancement factor on the incident light direction. Because the order parameters of the guest-host liquid crystal system depend on the direction of the incident light, the intermolecular orientation interaction potentials is also related with the incident light direction. To describe the interaction between the cis-isomer and the liquid crystalline molecules, we re-wrote Maier-Saupe potential expression by means of the order parameters of the doped liquid crystal system. Beginning with a two-level coupling equation, we investigated a microscopic formula and an angular dependence of the enhancement factor with the liquid crystal E63 doped with the R4 azo-dye, and obtained the relation of the enhancement factor with the rotational diffusion constants and the host order parameter. The comparison of our computational results with the existent experimental results verified our enhancement factor's microscopic form.

Citation Download Citation

Luogen Deng, Guohui Wang, Junliang Zhang, Liyuan Luo, Bin Shao, and Yunhong Zhang "Dependence of the molecular reorientation on the direction of incident light in azo-dye doped liquid crystals", Proc. SPIE 6030, ICO20: Display Devices and Systems, 60300T (26 January 2006); https://doi.org/10.1117/12.667642

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available