Enhanced photoinduced nematic reorientation in mixture with azo-dye-substituted polymer

被引：1

作者：

Parfenov, A ^{[1
]}

Chrzanowska, A ^{[1
]}

机构：

[1] Diagnost Instrumentat & Anal Lab, Starkville, MS 39759 USA

来源：

LIQUID CRYSTAL MATERIALS, DEVICES, AND FLAT PANEL DISPLAYS | 2000年 / 3955卷

关键词：

liquid crystal; isomerization; nonlinear optics;

D O I：

10.1117/12.379980

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The optically induced reorientation of nematic liquid crystal doped with ate-dye substituted polymer is investigated measuring photoinduced birefringence. These measurement reveal the value (Delta n similar to 0.1) of induced birefringence of liquid crystal with dye polymer which significantly exceeds the value of birefringence previously obtained in nematic mixture with the low molecular weight dye. More than one order of enhancement is connected with lower diffusivity of polymer. Applications for fiber all-optical switch and nonlinear filtering are suggested.

引用

页码：26 / 32

页数：7

共 12 条

[1]

Barnik M. I., 1995, Crystallography Reports, V40, P691

[2]

Blinov L. M., 1994, ELECTROOPTIC EFFECTS

[3]

CHRZANOWSKA A, 1999, UNPUB PHYS REV E

[4] Photomodification of polymer films: azobenzene-containing polyurethanes [J].

Itoh, M ;

Harada, K ;

Matsuda, H ;

Ohnishi, S ;

Parfenov, A ;

Tamaoki, N ;

Yatagai, T .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1998, 31 (05) :463-471

[5] MOLECULAR INTERPRETATION OF THE ABSORPTION-INDUCED OPTICAL REORIENTATION OF NEMATIC LIQUID-CRYSTALS [J].

JANOSSY, I .

PHYSICAL REVIEW E, 1994, 49 (04) :2957-2963

[6] TEMPERATURE-DEPENDENCE OF THE OPTICAL FREEDERICKSZ TRANSITION IN DYED NEMATIC LIQUID-CRYSTALS [J].

JANOSSY, I ;

CSILLAG, L ;

LLOYD, AD .

PHYSICAL REVIEW A, 1991, 44 (12) :8410-8413

[7]

KOMITOV L, 1998, COMMUNICATION

[8] Photoexcited azo-dye induced torque in nematic liquid crystals [J].

Saad, B ;

Galstyan, TV ;

Denariez-Roberge, MM ;

Dumont, M .

OPTICS COMMUNICATIONS, 1998, 151 (4-6) :235-240

[9] Diffusion of photoexcited azo dye in a liquid-crystal host [J].

Saad, B ;

Denariez-Roberge, MM ;

Galstyan, TV .

OPTICS LETTERS, 1998, 23 (09) :727-729

[10] Optical reorientation in dye-doped nematics [J].

Santamato, E ;

Abbate, G ;

Maddalena, P ;

Marrucci, L ;

Paparo, D ;

Massera, E .

MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1997, 302 :111-120

← 1 2 →