Nonlinear optical properties and photoinduced anisotropy of an azobenzene ionic liquid-crystalline polymer

被引：4

作者：

Zhang, Xiaoqiang ^{[1
]}

Wang, Changshun ^{[1
]}

Pan, Xu ^{[1
]}

Xiao, Sufang ^{[2
]}

Zeng, Yi ^{[1
]}

He, Tingchao ^{[1
]}

Lu, Xuemin ^{[2
]}

机构：

[1] Shanghai Jiao Tong Univ, Dept Phys, Shanghai 200240, Peoples R China

[2] Shanghai Jiao Tong Univ, Sch Chem & Chem Technol, Shanghai 200240, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2010年 / 283卷 / 01期

基金：

美国国家科学基金会;

关键词：

Azobenzene ionic liquid-crystal; Nonlinear refractive index; Photoinduced anisotropy; SIDE-CHAIN; ALIGNMENT; STORAGE;

D O I：

10.1016/j.optcom.2009.09.054

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The nonlinear optical properties and photoinduced anisotropy of an azobenzene ionic liquid-crystalline polymer were investigated. The single beam Z-scan measurement showed the polymer film possessed a value of nonlinear refractive index n(2) = -1.07 x 10(-9) cm(2)/W under a picosecond 532 nm excitation. Photoinduced anisotropy in the polymer was studied through dichroism and photoinduced birefringence. A photoinduced birefringence value Delta n similar to 10(-2) was achieved in the polymer film. The mechanism for the nonlinear optical response and the physical process of photoinduced anisotropy in the polymer were discussed. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：146 / 150

页数：5

共 18 条

[1] Smectic liquid-crystalline phases of quaternary group VA (especially phosphonium) salts with three equivalent long n-alkyl chains.: How do layered assemblies form in liquid-crystalline and crystalline phases? [J].

Abdallah, DJ ;

Robertson, A ;

Hsu, HF ;

Weiss, RG .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2000, 122 (13) :3053-3062

[2] Orientational stability of azobenzene-containing materials in polarization recording [J].

Barada, Daisuke ;

Fukuda, Takashi ;

Sumimura, Hiroshi ;

Itoh, Masahide ;

Yatagai, Toyohiko .

JAPANESE JOURNAL OF APPLIED PHYSICS, 2008, 47 (02) :1203-1207

[3] THERMAL CIS-TRANS ISOMERIZATION RATES OF AZOBENZENES BOUND IN THE SIDE-CHAIN OF SOME COPOLYMERS AND BLENDS [J].

BARRETT, C ;

NATANSOHN, A ;

ROCHON, P .

MACROMOLECULES, 1994, 27 (17) :4781-4786

[4] Photoinduced orientation of azobenzene chromophores in amorphous polymers as studied by real-time visible and FTIR spectroscopies [J].

Buffeteau, T ;

Labarthet, FL ;

Pezolet, M ;

Sourisseau, C .

MACROMOLECULES, 1998, 31 (21) :7312-7320

[5] Nonlinear optical limiting of the azo dye methylred doped nematic liquid crystalline films [J].

Deng, LG ;

Liu, HK .

OPTICAL ENGINEERING, 2003, 42 (10) :2936-2941

[6] REVERSIBLE DIGITAL AND HOLOGRAPHIC OPTICAL STORAGE IN POLYMERIC LIQUID-CRYSTALS [J].

EICH, M ;

WENDORFF, JH ;

RECK, B ;

RINGSDORF, H .

MAKROMOLEKULARE CHEMIE-RAPID COMMUNICATIONS, 1987, 8 (01) :59-63

[7] THE MECHANISM OF POLYMER ALIGNMENT OF LIQUID-CRYSTAL MATERIALS [J].

GEARY, JM ;

GOODBY, JW ;

KMETZ, AR ;

PATEL, JS .

JOURNAL OF APPLIED PHYSICS, 1987, 62 (10) :4100-4108

[8]

HE TC, 2008, PHYS B, V10, P2991

[9] OPTICAL SWITCHING AND IMAGE STORAGE BY MEANS OF AZOBENZENE LIQUID-CRYSTAL FILMS [J].

IKEDA, T ;

TSUTSUMI, O .

SCIENCE, 1995, 268 (5219) :1873-1875

[10]

Meng X, 1996, J POLYM SCI POL PHYS, V34, P1461, DOI 10.1002/(SICI)1099-0488(199606)34:8<1461::AID-POLB9>3.0.CO

← 1 2 →