可调谐型金属线栅偏振器的特性研究

凌进中; 黄元申; 王中飞; 王琦; 张大伟; 庄松林

doi:10.7498/aps.62.144214

摘要

金属线栅偏振器是一种新兴的基于微纳结构的光学偏振器件, 体积小、性能高、易集成.但在紫外和可见光波段, 通过缩小线栅的特征尺寸来提高消光比的方法已经受到纳米制作工艺的限制, 因此需要新的结构来提高其偏振特性.双层金属线栅结构仅在特定波段上提高器件的偏振特性. 在此基础上, 提出一种间距可调谐的金属线栅偏振器结构, 通过调谐两层金属线栅之间的距离来确保偏振器极高的消光比和很强的透过率. 利用VirtualLab软件的傅里叶模式方法, 计算了可调谐型金属线栅偏振的透过率和消光比. 数值仿真结果表明, 双层可调谐型金属线栅结构在整个紫外、可见光波段极大地提高了透射光的消光比和透过率.

关键词:

Abstract

Nanowire-grid polarizer is of a periodic sub-wave structure of metallic nanowire on the substrate, fabricated by nanoimprint technology. Different from traditional polarization prism and dichroic polarizer, the nanowire-grid polarizer has many advantages such as compact size, easy integration and high polarization performance. However, in the ultraviolet and visible regions, it is infeasible to improve the performance of single layer nanowire structure by reducing the character size of nanowire because of the bottleneck of lithographic process. The double-layer nanowire-grid structure could improve the polarization characteristics at some special wavelengths but not full-wave band of ultraviolet and visible regions. In this paper, we propose a tunable double-layer structure to enhance the extinction ratio and transmission at each wavelength by tuning the distance between two nanowire-grid polarizers through adjusting the voltage applied to PZT. To calculate the transmittance and transmission extinction ratio of tunable structure, software VirtualLab is employed and the Fourier model method is used. The numerical simulation results show that the tunable structure have a higher polarization characteristic in ultraviolet and visible regions than single layer structure and double layers structure.

Keywords:

作者及机构信息

1.
上海理工大学光电信息与计算机工程学院, 上海 200093;

2.
上海市现代光学系统重点实验室, 上海 200093

基金项目: 国家自然科学基金(批准号: 60908021);国家科技支撑计划(批准号: 2011BAF02B04);国家重大科学仪器设备开发专项(批准号: 2011YQ15004004);上海市教委曙光项目(批准号: 11SG44);上海市超精密光学加工与检测服务平台建设(批准号: 11DZ2290301)和上海市研究生创新基金(批准号: JWCXSL1201)资助的课题.

Authors and contacts

1.
School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;

2.
Shanghai Key Laboratory of Modern Optics System, Shanghai 200093, China

Funds: Project supported by the National Natural Science Foundation of China (Grant No. 60908021), National Key Technologies R&D Program of China (Grant No. 2011BAF02B04), the National Science Instrument Important Project of China (Grant No. 2011YQ15004004), the “Dawn” Program of Shanghai Education Commission, China (Grant No. 11SG44), the Shanghai Ultra-Precision Optical Manufacture and Testing Center, China (Grant No. 11DZ2290301), and the Innovation Fund Project for Graduate Student of Shanghai, China (Grant No. JWCXSL1201).

参考文献

[1]	Ge Z, Wu S T 2008 Appl. Phys. Lett. 93 121104
[2]	Yao P H, Chung C J, Wu C L, Chen C H 2012 Opt. Express 20 4819
[3]	Yu X J, Kowk H S 2003 Appl. Opt. 42 6335
[4]	Chuss D T, Wollack E J, Henry R 2012 Appl. Opt. 51 197
[5]	Kim D 2005 Appl. Opt. 44 1366
[6]	Weber T, Kasebier T, Kley E B 2011 Opt. Lett. 36 445
[7]	Weber T, Fuchs H J, Schmidt H, Kely E B 2009 Proc. SPIE 7205 720504
[8]	Takano K, Yokoyama H, Ichii A 2011 Opt. Lett. 36 2665
[9]	Wang J J, Walters F, Liu X, Sciortino P, Deng X G 2007 Appl. Phys. Lett. 90 061104
[10]	Yang Z Y, Lu Y F 2007 Opt. Express 15 9510
[11]	Wang J J, Zhang W, Deng X G, Deng J D, Liu F, Sciortino P, Chen L 2005 Opt. Lett. 30 195
[12]	Pelletier V, Asakawa K, Wu M 2006 Appl. Phys. Lett. 88 211114
[13]	Chen L, Wang J J, Walters F 2007 Appl. Phys. Lett. 90 063111
[14]	Wang Q, Zhang D W, Huang Y S, Ni Z J, Chen J B, Zhong Y W, Zhuang S L 2010 Opt. Lett. 35 1236
[15]	Yang W W, Wen Y M, Li P, Bian L X 2008 Acta Phys. Sin. 57 4545 (in Chinese) [杨伟伟, 文玉梅, 李平, 卞雷祥 2008 物理学报 57 4545]

施引文献

[1]	Ge Z, Wu S T 2008 Appl. Phys. Lett. 93 121104
[2]	Yao P H, Chung C J, Wu C L, Chen C H 2012 Opt. Express 20 4819
[3]	Yu X J, Kowk H S 2003 Appl. Opt. 42 6335
[4]	Chuss D T, Wollack E J, Henry R 2012 Appl. Opt. 51 197
[5]	Kim D 2005 Appl. Opt. 44 1366
[6]	Weber T, Kasebier T, Kley E B 2011 Opt. Lett. 36 445
[7]	Weber T, Fuchs H J, Schmidt H, Kely E B 2009 Proc. SPIE 7205 720504
[8]	Takano K, Yokoyama H, Ichii A 2011 Opt. Lett. 36 2665
[9]	Wang J J, Walters F, Liu X, Sciortino P, Deng X G 2007 Appl. Phys. Lett. 90 061104
[10]	Yang Z Y, Lu Y F 2007 Opt. Express 15 9510
[11]	Wang J J, Zhang W, Deng X G, Deng J D, Liu F, Sciortino P, Chen L 2005 Opt. Lett. 30 195
[12]	Pelletier V, Asakawa K, Wu M 2006 Appl. Phys. Lett. 88 211114
[13]	Chen L, Wang J J, Walters F 2007 Appl. Phys. Lett. 90 063111
[14]	Wang Q, Zhang D W, Huang Y S, Ni Z J, Chen J B, Zhong Y W, Zhuang S L 2010 Opt. Lett. 35 1236
[15]	Yang W W, Wen Y M, Li P, Bian L X 2008 Acta Phys. Sin. 57 4545 (in Chinese) [杨伟伟, 文玉梅, 李平, 卞雷祥 2008 物理学报 57 4545]

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