Polarization-multiplexed optical memory with urethane-urea copolymers

被引：31

作者：

Alasfar, S ^{[1
]}

Ishikawa, M

Kawata, Y

Egami, C

Sugihara, O

Okamoto, N

Tsuchimori, M

Watanabe, O

机构：

[1] Shizuoka Univ, Fac Engn, Hamamatsu, Shizuoka 4328561, Japan

[2] Toyota Cent Res & Dev Labs Inc, Aichi 4801192, Japan

来源：

APPLIED OPTICS | 1999年 / 38卷 / 29期

关键词：

D O I：

10.1364/AO.38.006201

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a polarization-multiplexed optical memory with urethane-urea copolymers. The side chains of the methane-urea copolymers induce cis-trans isomerization by illumination of blue or green light, and they align perpendicular to the Linear polarization of the illuminated Light, thus producing optical anisotropy. We found that the material showed selective anisotropy for the particular direction that was perpendicular to that of the recording beam polarization. By use of the anisotropic property three different data pages were multiplexed at the same spot of the medium. Erasure of the recorded bit data is also demonstrated. (C) 1999 Optical Society of America.

引用

页码：6201 / 6204

页数：4

共 19 条

[1] LIGHT-INDUCED ANISOTROPY IN AZO-DYE-COLORED MATERIALS [J].

EBRALIDZE, TD ;

MUMLADZE, AN .

APPLIED OPTICS, 1990, 29 (04) :446-447

[2] SURFACE-MEDIATED ALIGNMENT OF NEMATIC LIQUID-CRYSTALS WITH POLARIZED LASER-LIGHT [J].

GIBBONS, WM ;

SHANNON, PJ ;

SUN, ST ;

SWETLIN, BJ .

NATURE, 1991, 351 (6321) :49-50

[3] CONTINUOUS GRAY-SCALE IMAGE STORAGE USING OPTICALLY ALIGNED NEMATIC LIQUID-CRYSTALS [J].

GIBBONS, WM ;

KOSA, T ;

PALFFYMUHORAY, P ;

SHANNON, PJ ;

SUN, ST .

NATURE, 1995, 377 (6544) :43-46

[4]

HELL S, 1989, P SOC PHOTO-OPT INS, V1139, P92, DOI 10.1117/12.961779

[5]

HESSELINK L, 1993, OPT QUANT ELECTRON, V25, P611

[6] Reflection-type confocal readout for multilayered optical memory [J].

Ishikawa, M ;

Kawata, Y ;

Egami, C ;

Sugihara, O ;

Okamoto, N ;

Tsuchimori, M ;

Watanabe, O .

OPTICS LETTERS, 1998, 23 (22) :1781-1783

[7]

KAWATA S, 1993, P SOC PHOTO-OPT INS, V2042, P314

[8] Confocal microscope for three-dimensional polarization analysis [J].

Kawata, Y ;

Inami, W .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1998, 37 (12A) :6648-6650

[9] Use of two-photon absorption in a photorefractive crystal for three-dimensional optical memory [J].

Kawata, Y ;

Ishitobi, H ;

Kawata, S .

OPTICS LETTERS, 1998, 23 (10) :756-758

[10] Randomly accessible, multilayered optical memory with a Bi12SiO20 crystal [J].

Kawata, Y ;

Tanaka, T ;

Kawata, S .

APPLIED OPTICS, 1996, 35 (26) :5308-5311

← 1 2 →