Focusing behavior of 2-dimensional plasmonic conical zone plate

Rakesh G. Mote; Oleg V. Minin; Igor V. Minin

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Focusing behavior of 2-dimensional plasmonic conical zone plate

机译：二维等离激元锥形波带片的聚焦特性

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A conical configuration plasmonic zone plate based on Fresnel zones made up of Au thin film slits is proposed for focusing in the free space with visible illumination. The surface plasmons enable propagation of radiating modes to distances equal to several wavelengths of the illumination field. Through numerical simulations, the conical structure found to yield focal spot beating the diffraction barrier encountered by conventional focusing elements. The focal spot size measured as full-width at half-maximum (FWHM) is observed to be as small as 0.31 times the illumination wavelength at the focal distance of 8 wavelength. Moreover, the simple design rules make it possible to predict and control the focal distances accurately.

机译：提出了一种基于菲涅耳区的圆锥形等离子波带片，该带片由Au薄膜狭缝组成，用于在可见光下聚焦在自由空间中。表面等离子体激元能够使辐射模式传播到等于照明场的几个波长的距离。通过数值模拟，发现锥形结构产生的焦点超过了传统聚焦元件遇到的衍射屏障。在8个波长的焦距下，观察到的以半峰全宽（FWHM）度量的焦点尺寸小到照明波长的0.31倍。此外，简单的设计规则使准确预测和控制焦距成为可能。

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来源
《Optical and quantum electronics》 |2017年第8期|271.1-271.9|共9页
作者
Rakesh G. Mote; Oleg V. Minin; Igor V. Minin;
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作者单位

Department of Mechanical Engineering, Indian Institute of Technology Bombay, Mumbai 400076, India;

National Research Tomsk State University, 36 Lenin Ave, Tomsk, Russia 634050;

National Research Tomsk Polytechnic University, 30 Lenin Avenue, Tomsk, Russia 634050;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
Diffractive element; Diffraction limit; Surface plasmon polariton; Beam focusing;

机译：衍射元素;衍射极限;表面等离激元极化;光束聚焦;

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1. Comparison of subwavelength focusing properties of diffraction and Fresnel zone plate plasmonic planar lenses [J] . Feng D., Zhang C., Yang Y. Optik: Zeitschrift fur Licht- und Elektronenoptik: = Journal for Light-and Electronoptic . 2013,第20期

机译：衍射和菲涅耳波带片等离子平面透镜的亚波长聚焦特性比较
2. Subwavelength Focusing Using Plasmonic Wavelength-Launched Zone Plate Lenses [J] . Jun Wang, Wei Zhou, Er-Ping Li, Plasmonics . 2011,第2期

机译：使用等离子波发射的波带片透镜进行亚波长聚焦
3. Subwavelength Focusing Using Plasmonic Wavelength-Launched Zone Plate Lenses [J] . Jun Wang, Wei Zhou, Er-Ping Li, Plasmonics . 2011,第2期

机译：使用等离子波发射的波带片透镜进行亚波长聚焦
4. Efficient transport and focusing of optical signal and energy via spiral conical plasmonic tip integrated with optical fiber [C] . Jiafang Li, Zhiguang Liu, Zhi-Yuan Li Progress In Electromagnetic Research Symposium . 2016

机译：通过与光纤集成的螺旋锥形等离激元尖端，有效传输和聚焦光信号和能量
5. Efficient subdiffraction focusing of light using zone plate and bowtie aperture [D] . Srisungsitthisunti, Pornsak 2011

机译：使用波带片和领结光阑对光进行有效的亚衍射聚焦
6. Efficient focusing of 8 keV X-rays with multilayer Fresnel zone plates fabricated by atomic layer deposition and focused ion beam milling [O] . Marcel Mayer, Kahraman Keskinbora, Corinne Grévent, -1

机译：通过原子层沉积和聚焦离子束铣削加工的多层菲涅耳波带片有效聚焦8 keV X射线
7. Conical Grid Plate Flame Stabilizers for Combustor Primary Zones [O] . A.F. Ali, G.E. Andrews 1986

机译：燃烧室锥形栅极板火焰稳定剂
8. Focusing Properties of an Acoustic Thin Lens and Zone Plate [R] . Hughes, W. J., Craig, J. R. 1996

机译：声学薄透镜和区域板的聚焦特性

Focusing behavior of 2-dimensional plasmonic conical zone plate

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