[1]陈虎,王加贤.Ge/Al-SiO2薄膜材料的非线性光学特性[J].华侨大学学报(自然科学版),2012,33(4):380-383.[doi:10.11830/ISSN.1000-5013.2012.04.0380]
　CHEN Hu,WANG Jia-xian.Nonlinear Optical Properties of Ge/Al-SiO2 Film[J].Journal of Huaqiao University(Natural Science),2012,33(4):380-383.[doi:10.11830/ISSN.1000-5013.2012.04.0380]
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Ge/Al-SiO2薄膜材料的非线性光学特性()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第33卷
期数:
2012年第4期
页码:
380-383
栏目:
出版日期:
2012-07-20

文章信息/Info

Title:
Nonlinear Optical Properties of Ge/Al-SiO2 Film
文章编号:
1000-5013(2012)04-0380-04
作者:
陈虎;  王加贤
华侨大学 信息科学与工程学院, 福建 厦门 361021
Author(s):
CHEN Hu;  WANG Jia-xian
College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China
关键词:
三阶非线性;  光学性质;  Ge/Al-SiO2薄膜;  Z扫描技术;  磁控溅射
Keywords:
third-order nonlinear;  optical properties;  Ge/Al-SiO2 film;  Z-scan technique;  magnetron sputtering
分类号:
O437;O484.4
DOI:
10.11830/ISSN.1000-5013.2012.04.0380
文献标志码:
A
摘要:
采用磁控共溅射及后退火技术制备Ge,Al共掺SiO2薄膜,通过X射线衍射谱和傅里叶红外吸收谱对样品进行表征,并采用皮秒脉冲激光器的单光束Z扫描技术研究薄膜的三阶非线性光学特性.研究结果表明:薄膜材料对1 064 nm的光具有自散焦和双光子吸收效应,薄膜的三阶极化率χ(3)为3.84×10-16 m2·V-2.薄膜材料的三阶非线性极化率比SiO2和GeO2均有显著的提高,说明薄膜材料中的纳米Ge颗粒的量子限域效应及双光子吸收效应是其产生非线性光学效应增强的主要原因,同时Al的掺杂也促进了材料的三阶非线性光学效应的增强.
Abstract:
Ge and Al co-doped SiO2 film was prepared by magnetron sputtering and thermal annealing technique. Then the film was characterized by XRD spectrum and FTIR absorption spectrum measurement. Nonlinear optical properties of the film was probed by the Z-scan technique using a 1 064 nm picosecond laser beam. The experimental results show that the nonlinear absorption to 1 064 nm beam is due to the self-defocusing and the two photons absorption and the nonlinear susceptibility is 3.84×10-16 m2·V-2. The larger value of third-order optical nonlinear susceptibility compared to SiO2 and GeO2 is mainly attributed to the enhancement quantum confinement of Ge nanocrystal and two photons absorption of the film. Doping Al is also good to enhance the value of third-order optical nonlinear susceptibility.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2012-02-04
通信作者: 王加贤(1955-),男,教授,主要从事固体激光技术和超短光脉冲的研究.E-mail:wangjx@hqu.edu.cn.
基金项目: 福建省自然科学基金资助项目(2012J01277); 福建省青年科技人才创新项目(2001J030)
更新日期/Last Update: 2012-07-20