深亚波长约束的表面等离子体纳米激光器研究

黄洪; 赵青; 焦蛟; 梁高峰; 黄小平

doi:10.7498/aps.62.135201

摘要

本文提出了一种新颖的基于半导体纳米线/空气间隙/金属薄膜复合结构的表面等离子体纳米激光器, 并给出了理论研究和仿真分析. 这种结构通过金属界面的表面等离子体模式与高增益介质纳米线波导模式耦合, 从而使场增强效应得到显著提高. 同时通过数值仿真研究, 得到该混合波导结构的模式特性和增益阈值随空气槽宽度、纳米线半径的变化规律, 表明它可以实现对输出光场的深亚波长约束, 同时保持低损耗传输和高场强限制能力. 通过最优化选择, 最终得到纳米等离子体激光器的最优结构尺寸.

关键词:

Abstract

We have proposed a novel surface plasmonic nanolaser based on a nanowire/air gap/metal thin film hybrid structure to carry out theoretical research and simulation analysis. Opening an air groove in the MgF2 insulating layer, then making a nanowire embedded on the top of the air slot but maintaining a gap between the nanowire and the metal layer, thereby we produce a coupled hybrid plasmonic waveguide and a significant field enhancement effect. This structure enables the realization of an air gap. By simulating the modal properties and the lasing threshold of the hybrid plasmonic mode under different geometric parameters, the capacity of subwavelength scale with low propagation loss and high field confinement is demonstrated. Finally we achieve the nanolaser's optimal structure size. Compared with the general diffraction limit laser, this structure can reduce the physical size of the device and the physical mode. The proposed nanolaser could be easily integrated with various nanophotonic devices, and it may become an appealing candidate for future active plasmonic systems.

Keywords:

作者及机构信息

1.
电子科技大学物理电子学院, 成都 610054

基金项目: 国家重点基础研究发展计划(973计划)(批准号: 2011CB301805);国家国际科技合作专项项目(批准号: OS20122R0151)和国家高技术研究发展计划(863计划)(批准号: 2011AA7022016, 2011AA8095044)资助的课题.

Authors and contacts

1.
University of Electronic Science and Technology of China, Chengdu 610054, China

Funds: Project supported by the National Basic Research Program of China (Grant No. 2011CB301805), the International Cooperation Projects (Grant No. OS2012R0151), and the National High Technology Research and Development Program of China (Grant Nos. 2011AA7022016, 2011AA8095044).

参考文献

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[2]	Sorger V J, Ye Z L, Oulton R F, Wang Y, Bartal G, Yin X B, Zhang X 2011 Nature Communications 2 331
[3]	Oulton R F, Sorger V J, Zentraf T, Ma R M, Gladden C, Dai L, Bartal G, Zhang X 2009 Nature 461 629
[4]	Noginov M A, Zhu G, Belgrave A M, Bakker R, Shalaev V M, Narimanov E E, Stout S, Herz E, Suteewong T, Winsner U 2009 Nature 460 1110
[5]	Barnes W L, Dereux A, Ebbesen T W 2003 Nature 424 824
[6]	Zijlstra P, Chon J W M, Gu M 2009 Nature 459 410
[7]	Fujii M, Leuthold J, Freude W 2009 IEEE Photon. Technol. Lett. 21 362
[8]	Bian Y S, Zheng Z, Liu Y, Liu J, Zhu J S, Zhou T 2011 Opt. Exp. 19 22417
[9]	Zhu L 2010 IEEE photon. Technol. Lett. 22 535
[10]	Oulton R F, Sorger V J, Genor D A, Pile D F P, Zhang X 2008 Nature Photon. 2 496
[11]	Bian Y S, Zheng Z, Liu Y, Zhu J S, Zhou T 2011 IEEE photon. Technol. Lett. 23 884
[12]	Raether H 1986 Surface Plasmons on Smooth and Rough Surfaces and on Gratings (New York, London: Springer-Verlag) p8
[13]	Selvan S T, Hayakawa T, Nogami M 1999 Phys. Chem. B 103 7064
[14]	Chen X, Zhao Q, Fang L, Wang C T, Luo X G 2011 High Power Laser and Partical Beams 23 806 (in Chinese) [陈欣, 赵青, 方亮, 王长涛, 罗先刚 2011 强激光与粒子束 23 806]
[15]	Liang G F, Zhao Q, Chen X, Wang C T, Zhao Z Y, Luo X G 2012 Acta Phys. Sin. 10 104203 (in Chinese) [梁高峰, 赵青, 陈欣, 王长涛, 赵泽宇, 罗先刚 2012 10 104203]
[16]	Sun H B, Maeda M, Takada K, Chon J W M, Gu M, Kawata S 2003 Appl. Phys. Lett. 83 819
[17]	Taflove A, Hagness S C 2005 Computational Electrodynamics: The Finite-Difference Time-Domain Method (Boston London: Artech House) p354
[18]	Zhang Y Q, Ge D B 2009 Acta Phys. Sin. 58 4573 (in Chinese) [张玉强, 葛德彪 2009 58 4573]
[19]	Chen L, Li X, Wang G P, Li W, Chen S H, Xiao L, Gao D S 2012 IEEE J. Lightwave Technol. 30 163
[20]	Chen L, Zhang T, Li X, Huang W P 2012 Opt. Exp. 20 20535
[21]	Coldren L A, Corzine S W 1995 Diode Lasers and Photonic Integrated Circuits Hoboken (NewYork: Wiley Interscience Publication)

施引文献

[1]	Duan X F, Huang Y, Agarwal R, Lieber C M 2003 Nature 421 241
[2]	Sorger V J, Ye Z L, Oulton R F, Wang Y, Bartal G, Yin X B, Zhang X 2011 Nature Communications 2 331
[3]	Oulton R F, Sorger V J, Zentraf T, Ma R M, Gladden C, Dai L, Bartal G, Zhang X 2009 Nature 461 629
[4]	Noginov M A, Zhu G, Belgrave A M, Bakker R, Shalaev V M, Narimanov E E, Stout S, Herz E, Suteewong T, Winsner U 2009 Nature 460 1110
[5]	Barnes W L, Dereux A, Ebbesen T W 2003 Nature 424 824
[6]	Zijlstra P, Chon J W M, Gu M 2009 Nature 459 410
[7]	Fujii M, Leuthold J, Freude W 2009 IEEE Photon. Technol. Lett. 21 362
[8]	Bian Y S, Zheng Z, Liu Y, Liu J, Zhu J S, Zhou T 2011 Opt. Exp. 19 22417
[9]	Zhu L 2010 IEEE photon. Technol. Lett. 22 535
[10]	Oulton R F, Sorger V J, Genor D A, Pile D F P, Zhang X 2008 Nature Photon. 2 496
[11]	Bian Y S, Zheng Z, Liu Y, Zhu J S, Zhou T 2011 IEEE photon. Technol. Lett. 23 884
[12]	Raether H 1986 Surface Plasmons on Smooth and Rough Surfaces and on Gratings (New York, London: Springer-Verlag) p8
[13]	Selvan S T, Hayakawa T, Nogami M 1999 Phys. Chem. B 103 7064
[14]	Chen X, Zhao Q, Fang L, Wang C T, Luo X G 2011 High Power Laser and Partical Beams 23 806 (in Chinese) [陈欣, 赵青, 方亮, 王长涛, 罗先刚 2011 强激光与粒子束 23 806]
[15]	Liang G F, Zhao Q, Chen X, Wang C T, Zhao Z Y, Luo X G 2012 Acta Phys. Sin. 10 104203 (in Chinese) [梁高峰, 赵青, 陈欣, 王长涛, 赵泽宇, 罗先刚 2012 10 104203]
[16]	Sun H B, Maeda M, Takada K, Chon J W M, Gu M, Kawata S 2003 Appl. Phys. Lett. 83 819
[17]	Taflove A, Hagness S C 2005 Computational Electrodynamics: The Finite-Difference Time-Domain Method (Boston London: Artech House) p354
[18]	Zhang Y Q, Ge D B 2009 Acta Phys. Sin. 58 4573 (in Chinese) [张玉强, 葛德彪 2009 58 4573]
[19]	Chen L, Li X, Wang G P, Li W, Chen S H, Xiao L, Gao D S 2012 IEEE J. Lightwave Technol. 30 163
[20]	Chen L, Zhang T, Li X, Huang W P 2012 Opt. Exp. 20 20535
[21]	Coldren L A, Corzine S W 1995 Diode Lasers and Photonic Integrated Circuits Hoboken (NewYork: Wiley Interscience Publication)

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