| Femtosecond laser induced index and relief gratings in polymer films |
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| 作者姓名： | 董毅 于晓强 孙渝明 李宇飞 侯学元 张献 |
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| 作者单位： | Department of Optics Shandong University，State Key Laboratory of Crystal Materials Shandong University，Department of Optics Shandong University，Department of Optics Shandong University，Department of Optics Shandong University，School of Materials Science and Engineering Shandong Institute of Light Industry Ji'nan 250100，Ji'nan 250100，Ji'nan 250100，Ji'nan 250100，Ji'nan 250100，Ji'nan 250100 |
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| 基金项目： | 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). |
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| 摘 要： | A true single-step process suitable for fabrication of micro-periodic structure in polymer films by two- photon 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.
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