Visible-laser ablation on a nanometer scale using urethane-urea copolymers

被引：16

作者：

Egami, C

Kawata, Y

Aoshima, Y

Takeyama, H

Iwata, F

Sugihara, O

Tsuchimori, M

Watanabe, O

Fujimura, H

Okamoto, N

机构：

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

[2] Toyota Cent Res & Dev Labs Inc, Aichi 4801100, Japan

来源：

OPTICS COMMUNICATIONS | 1998年 / 157卷 / 1-6期

关键词：

laser ablation; azo polymer; optical storage media;

D O I：

10.1016/S0030-4018(98)00411-8

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report visible-laser ablation of a urethane-urea copolymer containing an azo dye. The ablated depth on the copolymer film was proportional to incident laser energy. The linearity of a depth/energy conversion on a nanometer scale was, ensured at very low beam energy (similar to 2 J/cm(2)). Holographic grating formation was demonstrated as an example of application of this property, A sinusoidal,orating with 40-nm amplitude was easily fabricated on the surface of the polymer film by introducing two coherent laser beams. The main mechanism of grating formation in the copolymer was not mass transport of copolymer chains due to pressure gradients but evaporation of the copolymer, Mass reduction associated with polymer evaporation was observed by means of the Quartz Crystal Microbalance (QCM) method. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：150 / 154

页数：5

共 13 条

[1] Near-field optical holography [J].