Photomechanical response of disperse red 1 azobenzene dye-doped PMMA polymer fiber

被引：0

作者：

Ye, Xianjun ^{[1
]}

Kuzyk, Mark G. ^{[1
]}

机构：

[1] Department of Physics, Washington State University, Pullman, WA 99164-2814, United States

来源：

Optics Communications | 2014年 / 312卷

基金：

美国国家科学基金会;

关键词：

Esters - Point contacts - Plastic coatings - Irradiation - Doping (additives) - Isomers - Optical fibers;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Disperse red 1 azobenzene (DR1) doped poly(methyl methacrylate) (PMMA) optical fiber has been shown to have a fast photomechanical response upon 633 nm laser irradiation originating in photo-isomerization of the dopants between the cis and trans forms. In this work, laser light of 355 nm wavelength is used to investigate the trans to cis isomerization process, which should result in length contraction. A three-point-contact optically actuated beam-controlling mount is made of dye doped polymer fiber segments and metal-coated microscope coverslips to measure the photomechanical response. The length change of the fiber is determined from a quadrant photodetector reading upon beam deflection. The fiber is observed to elongate upon UV irradiation. We find that for DR1 dye in PMMA polymer, the dominant mechanism of the photomechanical effect is photo-thermally stimulated isomerization rather than direct photoisomerization. © 2013 Elsevier B.V.

引用

页码：210 / 215