Femtosecond laser induced index and relief gratings in polymer films  

作　　者：董毅 于晓强 孙渝明 李宇飞 侯学元 张献 

机构地区：[1]Department of Optics Shandong University [2]State Key Laboratory of Crystal Materials Shandong University [3]School of Materials Science and Engineering Shandong Institute of Light Industry

出　　处：《Chinese Optics Letters》2007年第4期191-193,共3页中国光学快报（英文版）

基　　金：This work was supported by the State Key Program of China (No.2004CB719803);the National Natural Science Foundation of China (No.50173015.50218001,and 60377041).

摘　　要：A true single-step process suitable for fabrication of micro-periodic structure in polymer films by twophoton initiated photopolymerization and laser ablation is presented. By the right choice of the irradiation energy, the irradiated zone is modified or ablated in the 1.44-μm-thick film. The mechanism of grating generation and the potential application of the gratings in integrated optics are discussed.A true single-step process suitable for fabrication of micro-periodic structure in polymer films by twophoton initiated photopolymerization and laser ablation is presented. By the right choice of the irradiation energy, the irradiated zone is modified or ablated in the 1.44-μm-thick film. The mechanism of grating generation and the potential application of the gratings in integrated optics are discussed.

关 键 词：Integrated optics IRRADIATION Laser ablation Periodic structures PHOTOPOLYMERIZATION Polymer films Thick films Ultrashort pulses 

分 类 号：O484.41[理学—固体物理]