多波长飞秒激光激发下GaAs纳米线SHG特性研究

张晓青; 贺号; 胡明列; 颜鑫; 张霞; 任晓敏; 王清月

doi:10.7498/aps.62.076102

摘要

本文基于有限元法研究了直立生长于GaAs衬底的GaAs纳米线的光场响应和光场增强性质. 实验使用多个波长的飞秒激光脉冲激发GaAs纳米线, 测得了较高效率的二次谐波信号, 并首次使用宽带超连续飞秒脉冲 (1000–1300 nm) 在纳米线上获取了宽带、无杂散荧光噪声的二次谐波信号. 这种高效的二次谐波产生过程主要归因于纳米结构引起的局域场增强效应. 本文阐明了GaAs纳米线的二次谐波倍频特性, 这些结果对于其在纳米光学中的光器件、光集成等领域的进一步研究和实际应用具有很好的参考价值.

关键词:

Abstract

The nonlinear optical properties of semiconductor nanowires are of vital importance in the researches of nano-optics and fabrication of nano-scale optoelectronic components. GaAs is a direct bandgap semiconductor material of wide bandgap, high electron mobility, large χ(2), high laser damage threshold and stable chemical properties, all of which make it a potential nonlinear optical material. In this report, based on the finite element method (FEM), we investigated the optical response and local field enhancement of GaAs nanowires perpendicular to the GaAs substrate surface. Under the radiation of femto-second laser pulses at different wavelengths, efficient second harmonic generation (SHG) signal was acquired from the nanowires. Furthermore, noise-free broadband SHG signal was also detected to be excitated by super-continuous femto-second pulses (1000-1300 nm). The high-efficiency SHG process could be attribated mainly to the local field enhancement effect of the nanowires. Our investigation is the first, as far as we know, demonstrate the SHG properties of GaAs nanowires, and the results suggest that GaAs nanowires are promising in the potential applications in nano-scale optical devices, integrated nanophotonic circuits, from which related nano-optics researches can benefit.

Keywords:

作者及机构信息

1.
天津大学精密仪器与光电子工程学院, 光电信息技术科学教育部重点实验室, 天津 300072;

2.
北京邮电大学信息光子学与光通信国家重点实验室, 北京 100876

基金项目: 国家重点基础研究发展计划 (批准号: 2010CB327600, 2011CB808101)、教育部博士点新教师基金(批准号: 20110032120057)和国家自然科学基金 (批准号: 61108080, 61020106007) 资助的课题.

Authors and contacts

1.
Ultrafast Laser Laboratory, School of Precision Instruments & Optoelectronics Engineering, Tianjin University; Key Laboratory of Optoelectronic Information Technical Science, Chinese Ministry of Education, Tianjin 300072, China;

2.
Key Laboratory of Information Photonics and Optical Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China

Funds: Project supported by the State Key Development Program for Basic Research of China (Grant Nos. 2010CB327600, 2011CB808101), the New Teachers' Foundation for Doctor Stations of Ministry of Education of China (Grant No. 20110032120057), and the National Natural Science Foundation of China (Grant Nos. 61108080, 61020106007).

参考文献

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施引文献

[1]	Qin J M, Tian L F, Zhao D X, Jiang D Y, Cao J M, Ding M, Guo Z 2011 Acta Phys. Sin. 60 107307 (in Chinese) [秦杰明, 田立飞, 赵东旭, 蒋大勇, 曹建明, 丁梦, 郭振 2011 60 107307]
[2]	Ren S T, Wang Q, Zhao F, Qu S L 2012 Chin. Phys. B 21 038104
[3]	Yan H, Choe H S, Nam S W, Hu Y, Das S, Klemic J F, Ellenbogen J C, Lieber C M 2011 Nature 470 240
[4]	Garnett E, Yang P 2010 Nano Lett. 10 1082
[5]	Patolsky F, Timko B P, Zheng G, Lieber C M 2007 Mrs Bulletin 32 142
[6]	Johnson J C, Choi H, Knutsen K P, Schaller R D, Yang G P, Saykally R J 2002 Nature Mater. 1 106
[7]	Liu R B, Zou B S 2011 Chin. Phys. B 20 047104
[8]	Johnson J C, Yan H, Schaller R D, Petersen P B, Yang P, Saykally R J 2002 Nano Lett. 2 279
[9]	Nakayama Y, Pauzauskie P, Radenovic A, Onorato R, Saykally R, Liphardt J, Yang P 2007 Nature 447 1098
[10]	Prasanth R, van Vugt L K, Vanmaekelbergh D A M, Gerritsen H C 2006 Appl. Phys. Lett. 88 181501
[11]	Barrelet C J, Ee Ho-Seok, Kwon S, Park H 2011 Nano Lett. 11 3022
[12]	Zhang Y, Zhou H, Liu S W, Tian Z R, Xiao M 2009 Nano Lett. 9 2109
[13]	Fan W, Zhang S, Panoiu N-C, Abdenour A, Krishna S, Osgood Jr. R M, Malloy K J, Brueck S R J 2006 Nano Lett. 6 1027
[14]	Ye X, Huang H, Ren X, Yang Y, Guo J, Huang Y, Wang Q 2010 Chin. Phys. Lett. 27 046101
[15]	Carl J B, Andrew B G, Lieber C M 2004 Nano Lett. 4 1981
[16]	Lide D R 2009 CRC handbook of chemistry and physics: a ready-refetence book of chemical and physical data, 90 th Edition (CRC Press)
[17]	Duan X, Wang J, Lieber C M 2000 Appl. Phys. Lett. 76 1116
[18]	Palik E D 1985 Handbook of Optical Constants of Solids (Boston, Academic Press)
[19]	Ditlbacher H, Hohenau A, Wagner D, Kreibig U, Rogers M, Hofer F, Aussenegg F, Krenn J R 2005 Phys. Rev. Lett. 95 257403
[20]	Lu C, Huang W, Luan J, Lu Z, Qian Y, Yun B, Hu G, Wang Z, Cui Y 2008 Opt. Commun. 281 4038
[21]	Gualtieri E J, Haupert L M, Simpson G J 2008 Chem. Phys. Lett. 465 167

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