A Hyperlens-Embedded Solid Immersion Lens for Beam Focusing Beyond the Diffraction Limit

被引：5
|
作者：
Zheng, Guoxing [1 ]
Zhang, Ruiying [1 ]
Li, Song [1 ]
He, Ping'an [1 ]
Zhou, Hui [1 ]
Shi, Yan [1 ]
机构：
[1] Wuhan Univ, Sch Elect Informat, Wuhan 430072, Hubei Province, Peoples R China
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2011年 / 23卷 / 17期
基金：
中国国家自然科学基金;
关键词：
Lenses; optical beam focusing; optical propagation in nonhomogeneous media; OPTICAL HYPERLENS; REALIZATION; SUPERLENS;
D O I：
10.1109/LPT.2011.2158638
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A novel beam focusing device called hyperlens-embedded solid immersion lens (HESIL) is proposed in this letter. In the device, a hyperlens which supports propagating waves with very large wavenumbers is embedded into a super-hemispherical solid immersion lens and a super-resolution focusing spot can be formed at the bottom planar plane of the HESIL. The working principles and characteristics of the device are discussed in detail. Numerical simulations verify that a nano-scale spot with a diameter of 57.5 nm (1/6.5 of the vacuum wavelength lambda(0)) is achieved (the numerical aperture of the objective is 0.45) and the system transmission exceeds 34%, which validates the effectiveness of our proposed device for beam focusing. The device is expected to find numerous applications in high-density near-field optical data storage, nano-photolithography, and so on.
引用
收藏
页码：1234 / 1236
页数：3
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