Signal processing by opto-optical interactions between self-localized and free propagating beams in liquid crystals

被引：68

作者：

Pasquazi, A

Alberucci, A

Peccianti, M

Assanto, G

机构：

[1] Univ Roma Tre, NooEL Nonlinear Opt & Optoelect Lab, Dept Elect Engn, I-00146 Rome, Italy

[2] Univ Roma Tre, Natl Inst Phys Matter, INFM, CNISM, I-00146 Rome, Italy

来源：

APPLIED PHYSICS LETTERS | 2005年 / 87卷 / 26期

关键词：

D O I：

10.1063/1.2158026

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The reorientational nonlinearity of nematic liquid crystals enables a self-localized spatial soliton and its waveguide to be deflected or destroyed by a control beam propagating across the cell. We demonstrate a simple all-optical readdressing scheme by exploiting the lens-like perturbation induced by an external beam on both a nematicon and a copolarized guided signal of different wavelength. Angular steering as large as 2.2 deg was obtained for control powers as low as 32 mW in the near infrared. (c) 2005 American Institute of Physics.

引用

页码：1 / 3

页数：3

共 21 条

[1] ALL-OPTICAL SWITCHING IN A NONLINEAR GAALAS X-JUNCTION [J].

AITCHISON, JS ;

VILLENEUVE, A ;

STEGEMAN, GI .

OPTICS LETTERS, 1993, 18 (14) :1153-1155

[2]

Assanto G, 2003, OPT PHOTONICS NEWS, V14, P44, DOI 10.1364/OPN.14.2.000044

[3] INTERACTION OF SOLITONS WITH A STRONG INHOMOGENEITY IN A NONLINEAR-OPTICAL FIBER [J].

BURTSEV, S ;

KAUP, DJ ;

MALOMED, BA .

PHYSICAL REVIEW E, 1995, 52 (04) :4474-4481

[4] Observation of optical spatial solitons in a highly nonlocal medium [J].

Conti, C ;

Peccianti, M ;

Assanto, G .

PHYSICAL REVIEW LETTERS, 2004, 92 (11) :113902-1

[5]

CONTI C, 1997, NONLINEAR OPTICS APP, P43

[6]

GENNES PD, 1995, INTRO LIQUID CRYSTAL

[7] One-dimensional spatial soliton dragging, trapping, and all-optical switching in AlGaAs waveguides [J].

Kang, JU ;

Stegeman, GI ;

Aitchison, JS .

OPTICS LETTERS, 1996, 21 (03) :189-191

[8] Self Focusing in Liquid Crystalline Waveguides [J].

Karpierz, Miroslaw A. ;

Sierakowski, Marek ;

Swillo, Marcin ;

Wolnski, Tomasz .

MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1998, 320 :157-163

[9]

Kivshar Y. S., 2003, OPTICAL SOLITONS FIB

[10] Interaction of spatial photorefractive solitons [J].

Królikowski, W ;

Denz, C ;

Stepken, A ;

Saffman, M ;

Luther-Davies, B .

QUANTUM AND SEMICLASSICAL OPTICS, 1998, 10 (06) :823-837

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