首页 | 本学科首页   官方微博 | 高级检索  
     检索      

飞秒激光所致金纳米粒子析出的玻璃非线性吸收
引用本文:曲士良,赵崇军,高亚臣,宋瑛林,刘树田,邱建荣,朱从善.飞秒激光所致金纳米粒子析出的玻璃非线性吸收[J].物理学报,2005,54(1):139-143.
作者姓名:曲士良  赵崇军  高亚臣  宋瑛林  刘树田  邱建荣  朱从善
作者单位:(1)哈尔滨工业大学(威海)物理系,威海 264209; (2)哈尔滨工业大学(威海)物理系,威海 264209;中国科学院上海光学精密机械研究所,上海 201800; (3)哈尔滨工业大学应用物理系,哈尔滨 150001; (4)中国科学院上海光学精密机械研究所,上海 201800
基金项目:哈尔滨工业大学(威海)科研基金(批准号:HIT(WH).2002.28),上海市科委科技基金(批准号 :0259nm055)和上海市博士后基金(批准号:2002.01)资助的课题.
摘    要:依据Z-scan技术,使用波长532nm的纳秒脉冲,研究了通过聚焦的飞秒脉冲诱导并辅以热处理得到的金纳米粒子析出的玻璃的非线性吸收.观察到金纳米粒子析出的玻璃具有饱和吸收特性.根据局域场效应,对实验结果拟合,得到在接近表面等离子体共振激发情况下,金纳米粒子三阶极化率虚部分别为Imχ(3)m=57×10-7esu.玻璃样品中金纳米粒子的非线性响应主要起源于热电子贡献. 关键词: 带内跃迁 带间跃迁 热电子贡献

关 键 词:带内跃迁  带间跃迁  热电子贡献
收稿时间:2003-09-22

Nonlinear absorptions in Au-nanoparticles-precipitated glasses induced by a femtosecond laser
Qu Shi-Liang,Zhao Chong-Jun,Gao Ya-Chen,Song Ying-Lin,Liu Shu-Tian,Qiu Jian-Rong and Zhu Cong-Shan.Nonlinear absorptions in Au-nanoparticles-precipitated glasses induced by a femtosecond laser[J].Acta Physica Sinica,2005,54(1):139-143.
Authors:Qu Shi-Liang  Zhao Chong-Jun  Gao Ya-Chen  Song Ying-Lin  Liu Shu-Tian  Qiu Jian-Rong and Zhu Cong-Shan
Abstract:We have investigated, by using Z-scan technique with ns pulses at 532nm, the nonlinear absorptions of Au-nanoparticles-precipitated glasses obtained by irradiation of focused femtosecond pulses with the help of heat treatment. We observed the saturable absorption behavior in Au-nanoparticles-precipitated glasses.We obtain, by fitting to the experimental results, in the light of the local field effect near the surface plasmon resonance,Imχ(3)m=57×10-7 esu for the imaginary parts of the third-order susceptibilities for Au nanoparticles. The nonlinear response of Au nanoparticles in the glass samples arises mainly from the hot electron contribution.
Keywords:interband transition    intraband transition    hot electron contribution
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《物理学报》浏览原始摘要信息
点击此处可从《物理学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号