基于双表面等离子激元吸收的纳米光刻

刘仿; 李云翔; 黄翊东

doi:10.7498/aps.66.148101

摘要

光刻技术（lithography）是微纳结构制备的关键技术之一.受限于光的衍射极限，传统光刻方法进一步缩小特征尺寸变得越来越难.表面等离子激元（surface plasmon polariton，SPP）作为光与金属表面自由电子密度振荡相互耦合形成的一种特殊电磁形式，具有波长短、场密度大、异常色散等特点，在突破传统光学衍射极限的研究和应用中具有重要的学术和实用价值.本文针对SPP在光刻胶中的非线性吸收及其在大视场纳米光刻中的应用进行了理论和实验探索.在回顾SPP概念的基础上，阐述了双SPP吸收的概念及其应用于纳米光刻的优势，明确了该效应具有与传统双光子吸收不同的内涵和特性.在800和400 nm飞秒激光的作用下，实现了基于双SPP吸收效应的周期干涉条纹，同时验证了双SPP吸收的阈值效应，通过控制曝光计量实现了图形线宽的调控，最小线宽小于真空光波长的1/10.利用SPP波长短、场增强的特点，并结合非线性吸收的阈值效应，单次曝光区域比纳米图形尺度大4-5个数量级，曝光区域的直径可达1.6 mm.同时制备出较为复杂的同心圆环结构.基于双SPP吸收独有的特性以及SPP丰富的模式，有望进一步在大光刻视场、超小尺度图形光刻技术上获得突破.

关键词:

作者及机构信息

1.
清华大学电子工程系, 信息科学与技术国家实验室, 北京 100084

通信作者: 刘仿, liu_fang@tsinghua.edu.cn;yidonghuang@tsinghua.edu.cn ; 黄翊东, liu_fang@tsinghua.edu.cn;yidonghuang@tsinghua.edu.cn

基金项目: 国家重点基础研究发展计划（批准号：2013CBA01704）和国家自然科学基金（批准号：61575104，61621064）资助的课题.

参考文献

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[25]	Chen D Z A 2007 Ph. D. Dissertation (Massachusetts: Massachusetts Institute of Technology)
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[27]	Li Y, Liu F, Xiao L, Cui K, Feng X, Zhang W, Huang Y 2013 Appl. Phys. Lett. 102 063113
[28]	Palik E D 1998 Handbook of Optical Constants of Solids (Vol. 3) (Cambridge: Academic Press)
[29]	Li Y, Liu F, Ye Y, Meng W, Cui K, Feng X, Zhang W, Huang Y 2014 Appl. Phys. Lett. 104 081115
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[31]	Fu Y, Zhou X 2010 Plasmonics 5 287
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[33]	Gao Y, Gan Q, Bartoli F J 2014 IEEE Photon. J. 6 1
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施引文献

[1]	Mack C 2008 Fundamental Principles of Optical Lithography: the Science of Microfabrication (Hoboken: John Wiley Sons)
[2]	Bakshi V 2009 EUV Lithography (Vol. 178) (Bellingham: Spie Press)
[3]	Cumpston B H, Ananthavel S P, Barlow S, Dyer D L, Ehrlich J E, Erskine L L, Heikal A A, Kuebler S M, Lee I Y S, McCord-Maughon D, Qin J 1999 Nature 398 51
[4]	Srituravanich W, Fang N, Sun C, Luo Q, Zhang X 2004 Nano Lett. 4 1085
[5]	Chou S Y, Krauss P R, Renstrom P J 1996 J. Vacuum Sci. Technol. B: Microelectr. Nanometer Struct. Process. Measur. Phenom. 14 4129
[6]	Zhai T, Zhang X, Pang Z, Dou F 2011 Adv. Mater. 23 1860
[7]	Zayats A V, Smolyaninov I I, Maradudin A A 2005 Phys. Reports 408 131
[8]	Brongersma M L, Kik P G 2007 Surface Plasmon Nanophotonics. (Berlin: Springer)
[9]	Srituravanich W, Durant S, Lee H Sun C, Zhang X 2005 J. Vacuum Sci. Technol. B: Microelectr. Nanometer Struct. Process. Measur. Phenom. 23 2636
[10]	Luo X, Ishihara T 2004 Appl. Phys. Lett. 84 4780
[11]	Seo S, Kim, H C, Ko H, Cheng M 2007 J. Vacuum Sci. Technol. B: Microelectr. Nanometer Struct. Process. Measur. Phenom. 25 2271
[12]	Srituravanich W, Pan L, Wang Y, Sun C, Bogy D B, Zhang X 2008 Nature Nanotechnol. 3 733
[13]	Pan L, Park Y, Xiong Y, Ulin-Avila E, Wang Y, Zeng L, Xiong S, Rho J, Sun C, Bogy D B, Zhang X 2011 Sci. Reports 1 175
[14]	Melville D O, Blaikie R J 2005 Opt. Express 13 2127
[15]	Sun H B, Kawata S 2004 In NMR3D Analysis Photopolymerization (Berlin: Springer Berlin Heidelberg) pp169-273
[16]	Lee K S, Yang D Y, Park S H, Kim R H 2006 Polym. Adv. Technol. 17 72
[17]	Park S H, Yang D Y, Lee K S 2009 Laser Photon. Rev. 3 1
[18]	Li Y X 2014 Ph. D. Dissertation (Beijing: Tsinghua University) (in Chinese) [李云翔 2014 博士学位论文 (北京: 清华大学)]
[19]	Bellan P M 2008 Fundamentals of Plasma Physics (Cambridge: Cambridge University Press)
[20]	Ritchie R H 1957 Phys. Rev. 106 874
[21]	Ponath H E, Stegeman G I 2012 Nonlinear Surface Electromagnetic Phenomena (Vol. 29) (Amsterdam: Elsevier)
[22]	Raether H 2013 Surface Plasmons on Smooth and Rough Surfaces and on Gratings (Berlin: Springer-Verlag Berlin)
[23]	Pines D 1956 Rev. Modern Phys. 28 184
[24]	Raether H 2006 Excitation of Plasmons and Interband Transitions by Electrons (Vol. 88) (Berlin: Springer)
[25]	Chen D Z A 2007 Ph. D. Dissertation (Massachusetts: Massachusetts Institute of Technology)
[26]	Hopfield J J 1958 Phys. Rev. 112 1555
[27]	Li Y, Liu F, Xiao L, Cui K, Feng X, Zhang W, Huang Y 2013 Appl. Phys. Lett. 102 063113
[28]	Palik E D 1998 Handbook of Optical Constants of Solids (Vol. 3) (Cambridge: Academic Press)
[29]	Li Y, Liu F, Ye Y, Meng W, Cui K, Feng X, Zhang W, Huang Y 2014 Appl. Phys. Lett. 104 081115
[30]	Meng W S 2015 M. S. Dissertation (Beijing: Tsinghua University) (in Chinese) [孟维思 2015 硕士学位论文 (北京: 清华大学)]
[31]	Fu Y, Zhou X 2010 Plasmonics 5 287
[32]	Carretero-Palacios S, Mahboub O, Garcia-Vidal F J, Martin-Moreno L, Rodrigo S G, Genet C, Ebbesen T W 2011 Opt. Express 19 10429
[33]	Gao Y, Gan Q, Bartoli F J 2014 IEEE Photon. J. 6 1
[34]	Gao Y, Xin Z, Zeng B, Gan Q, Cheng X, Bartoli F J 2013 Lab on a Chip 13 4755

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