基于飞秒瞬态反射/透射技术的纳米Au半透膜热效应研究

吴文智; 高来勖; 孔德贵; 高扬; 冉玲苓; 柴志军

doi:10.7498/aps.65.046801

摘要

以飞秒激光放大器作为光源联合使用瞬态反射/透射实验技术研究了纳米Au半透明纳米薄膜中非平衡载能粒子的热传导过程. 在相同实验条件下, 发现该薄膜的瞬态透射和反射信号明显不同并且延迟时间在5.07.5 ps时瞬态透射信号的符号发生改变. 对纳米薄膜的透射和反射信号进行了对比分析, 分别使用双温模型和Crude近似进行数据模拟并拟合, 分析认为沿膜厚方向的温度梯度变化和界面热阻效应引起介电函数的变化不同, 从而引起了瞬态透射信号和反射信号的不同. 对于半透明金属纳米薄膜需要同时考虑其瞬态透射和反射影响才能得到准确的瞬态吸收结果. 随着抽运脉冲能量的增加, 可以看到上升时间约为1.0 ps, 电子-晶格弛豫时间增加.

关键词:

Abstract

In this work, the relaxation dynamics of optically excited electrons and lattice in translucent gold nanofilms is measured with femtosecond transient reflection and transmission technique. In order to investigate the mechanisms of heat transfer in metal nanofilm theoretically, the two-temperature model and the Crude-model approximation are used to estimate the profile of decays and the temperature of electrons and lattice. Ultrafast relaxation dynamics of gold nanofilm 60 nm in thickness is different obviously in transient reflection and transmission measurements. Electron-lattice coupling effect in the transmission method is stronger and more sensitive than that in the reflection method under the same experimental conditions. Gradient change of temperature along the direction of film thickness and interface thermal resistance due to the boundary scattering should be responsible for the difference between them. Experimental data suggest that both transient reflection and transient transmission of translucent films should be considered together in the investigation on the mechanism of heat transfer. With increasing energy of pump laser pulse, the rise time is about 1.0 ps, and the electron-lattice relaxation time becomes longer.

Keywords:

作者及机构信息

1.
黑龙江大学电子工程学院, 哈尔滨 150080

通信作者: 吴文智, wuwenzhi@hlju.edu.cn

基金项目: 国家自然科学基金(批准号: 61204007)、黑龙江省新世纪优秀人才支持计划(批准号: 1254-NCET-018)、黑龙江省青年学术骨干支持计划(批准号: 1252G047)、黑龙江省博士后启动基金(批准号: LBH-Q14139)和黑龙江大学杰出青年基金(批准号: JCL201205, QL201211) 资助的课题.

Authors and contacts

1.
School of Electronic Engineering, Heilongjiang University, Harbin 150080, China

Corresponding author: Wu Wen-Zhi, wuwenzhi@hlju.edu.cn

Funds: Project supported by the National Natural Science Foundation of China (Grant No. 61204007), the New-Century Training Programme Foundation for the Talents by Heilongjiang Province, China (Grant No. 1254-NCET-018), the Foundation for University Key Teacher by Heilongjiang University, China (Grant No. 1252G047), the Heilongjiang Province Postdoctoral Science Foundation, China (Grant No. LBH-Q14139), and the Science Fund of Heilongjiang University for Young Scholars, China (Grant Nos. JCL201205, QL201211).

参考文献

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[5]	Li Q, Lao H Y, Lin J, Chen Y P, Chen X F 2011 Appl. Phys. A 105 125
[6]	Du G Q, Yang Q, Chen F, Ou Y, Wu Y M, Lu Y, Bian H, Hou X 2014 Chem. Phys. Lett. 597 153
[7]	Chen J, Chen W K, Tang J, Rentzepis P M 2011 Proc. Nat. Acad. Sci. USA 108 18887
[8]	Rotenberg N, Bristow A D, Pfeiffer M, Betz M, van Driel H M 2007 Phys. Rev. B 75 155426
[9]	Guo L, Hodson S L, Fisher T S, Xu X F 2012 J. Heat Transfer 134 042402
[10]	Wang B L,Wang R, Liu R J, Lu X H, Zhao J M, Li Z Y 2013 Sci. Rep. 3 2358
[11]	Venkatakrishnan K, Tan B, Ngoi B K A 2002 Opt. Laser Technol. 34 199
[12]	Wang H D, Ma W G, Zhang X, Wang W 2010 Acta Phys. Sin. 59 3856 (in Chinese) [王海东, 马维刚, 张兴, 王玮 2010 59 3856]
[13]	Zhu L D, Sun F Y, Zhu J, Tang D W 2012 Acta Phys. Sin. 61 130512 (in Chinese) [朱丽丹, 孙方远, 祝捷, 唐大伟 2012 61 130512]
[14]	Anisimov S, Kapeliovich B, Perelman T 1974 Soviet Phys. JETP 39 375
[15]	Elsayed-Ali H E, Norris T B, Pessot M A, MourouG A 1987 Phys. Rev. Lett. 58 1212
[16]	Fang R R, Wei H, Li Z H, Zhang D M 2012 Solid State Commun. 152 108
[17]	Li S Q, Ye H A, Liu C Y, Dou Y F, Huang Y 2013 Chin. Phys. B 22 077302
[18]	Hohlfeld J, Wellershoff S S, Gudde J, Conrad U, Jahnke V, Matthias E 2000 Chem. Phys. 251 237
[19]	Hopkins P E, Kassebaum J L, Norris P M 2009 J. Appl. Phys. 105 023710
[20]	Jesus G M, Michael P H, Stephen R M 2008 Surf. Sci. 602 3125
[21]	Bonn M, Denzler D N, Funk S, Wolf M, Wellershoff S S, Hohlfeld J 2000 Phys. Rev. B 61 1101
[22]	Hostetler J L, Smith A N, Czajkowsky D M, Norris P M 1999 Appl. Opt. 38 3614
[23]	Guo L, Xu X F 2014 J. Heat Transfer 136 122401
[24]	Carpene E 2006 Phys. Rev. B 74 024301
[25]	Lioudakis E, Othonos A, Dimakis E, Iliopoulos E, Georgakilas A 2006 Appl. Phys. Lett. 88 121128
[26]	Schoenlein R W, Lin W Z, Fujimoto J G, Eesley G L 1987 Phys. Rev. Lett. 58 1680
[27]	Garduno-Mejia J, Higlett M P, Meech S R 2007 Chem. Phys. 341 276
[28]	Conforti M, Valle G D 2012 Phys. Rev. B 85 245423
[29]	Sun C K, Vallee F, Acioli L H, Ippen E P, Fujimoto J G 1994 Phys. Rev. B 50 15337
[30]	Sun C K, Vallee F, Acioli L, Ippen E P, Fujimoto J G 1993 Phys. Rev. B 48 12365
[31]	Hopkins P E, Norris P M 2007 Appl. Surf. Sci. 253 6289
[32]	Yang Q, Du G Q, Chen F, Wu Y M, Si J H, Hou X 2014 Chin. J. Lasers 41 502005 (in Chinese) [杨青, 杜广庆, 陈烽, 吴艳敏, 司金海, 侯洵2014 中国激光 41 502005]

施引文献

[1]	Zhang C W, Bi K D, Wang J L, Ni Z H, Chen Y F 2012 Sci. China Tech. Sci. 55 1044 (in Chinese) [张春伟, 毕可东, 王建立, 倪中华, 陈云飞 2012 中国科学:技术科学 55 1044]
[2]	SmithA N, HostetlerJ L, Norris P M 1999 Numerical Heat Transfer Part A 35 859
[3]	Nielsen J B, Savolainen J M, Christensen M S, Balling P 2011 Appl. Phys. A 103 447
[4]	Du G Q, Yang Q, Chen F, Ou Y, Wu Y M, Hou X 2015 Int. J. Thermal Sci. 90 197
[5]	Li Q, Lao H Y, Lin J, Chen Y P, Chen X F 2011 Appl. Phys. A 105 125
[6]	Du G Q, Yang Q, Chen F, Ou Y, Wu Y M, Lu Y, Bian H, Hou X 2014 Chem. Phys. Lett. 597 153
[7]	Chen J, Chen W K, Tang J, Rentzepis P M 2011 Proc. Nat. Acad. Sci. USA 108 18887
[8]	Rotenberg N, Bristow A D, Pfeiffer M, Betz M, van Driel H M 2007 Phys. Rev. B 75 155426
[9]	Guo L, Hodson S L, Fisher T S, Xu X F 2012 J. Heat Transfer 134 042402
[10]	Wang B L,Wang R, Liu R J, Lu X H, Zhao J M, Li Z Y 2013 Sci. Rep. 3 2358
[11]	Venkatakrishnan K, Tan B, Ngoi B K A 2002 Opt. Laser Technol. 34 199
[12]	Wang H D, Ma W G, Zhang X, Wang W 2010 Acta Phys. Sin. 59 3856 (in Chinese) [王海东, 马维刚, 张兴, 王玮 2010 59 3856]
[13]	Zhu L D, Sun F Y, Zhu J, Tang D W 2012 Acta Phys. Sin. 61 130512 (in Chinese) [朱丽丹, 孙方远, 祝捷, 唐大伟 2012 61 130512]
[14]	Anisimov S, Kapeliovich B, Perelman T 1974 Soviet Phys. JETP 39 375
[15]	Elsayed-Ali H E, Norris T B, Pessot M A, MourouG A 1987 Phys. Rev. Lett. 58 1212
[16]	Fang R R, Wei H, Li Z H, Zhang D M 2012 Solid State Commun. 152 108
[17]	Li S Q, Ye H A, Liu C Y, Dou Y F, Huang Y 2013 Chin. Phys. B 22 077302
[18]	Hohlfeld J, Wellershoff S S, Gudde J, Conrad U, Jahnke V, Matthias E 2000 Chem. Phys. 251 237
[19]	Hopkins P E, Kassebaum J L, Norris P M 2009 J. Appl. Phys. 105 023710
[20]	Jesus G M, Michael P H, Stephen R M 2008 Surf. Sci. 602 3125
[21]	Bonn M, Denzler D N, Funk S, Wolf M, Wellershoff S S, Hohlfeld J 2000 Phys. Rev. B 61 1101
[22]	Hostetler J L, Smith A N, Czajkowsky D M, Norris P M 1999 Appl. Opt. 38 3614
[23]	Guo L, Xu X F 2014 J. Heat Transfer 136 122401
[24]	Carpene E 2006 Phys. Rev. B 74 024301
[25]	Lioudakis E, Othonos A, Dimakis E, Iliopoulos E, Georgakilas A 2006 Appl. Phys. Lett. 88 121128
[26]	Schoenlein R W, Lin W Z, Fujimoto J G, Eesley G L 1987 Phys. Rev. Lett. 58 1680
[27]	Garduno-Mejia J, Higlett M P, Meech S R 2007 Chem. Phys. 341 276
[28]	Conforti M, Valle G D 2012 Phys. Rev. B 85 245423
[29]	Sun C K, Vallee F, Acioli L H, Ippen E P, Fujimoto J G 1994 Phys. Rev. B 50 15337
[30]	Sun C K, Vallee F, Acioli L, Ippen E P, Fujimoto J G 1993 Phys. Rev. B 48 12365
[31]	Hopkins P E, Norris P M 2007 Appl. Surf. Sci. 253 6289
[32]	Yang Q, Du G Q, Chen F, Wu Y M, Si J H, Hou X 2014 Chin. J. Lasers 41 502005 (in Chinese) [杨青, 杜广庆, 陈烽, 吴艳敏, 司金海, 侯洵2014 中国激光 41 502005]

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