Focusing of light beyond the diffraction limit of half the wavelength

K. R. Chen

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Focusing of light beyond the diffraction limit of half the wavelength

机译：聚焦超过一半波长衍射极限的光

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The diffraction limit sets the smallest achievable linewidth at half the wavelength. With a subwavelength plasmonic lens allowing one to reduce the diffraction via an asymmetry and to generate and squeeze the wave functions, an incident light is focused by the aperture to a single line with its width smaller than the limited value in the intermediate zone. The focused fields are capable of propagating in free space. This light focusing process, besides being of academic interest, is expected to open up a wide range of application possibilities.

机译：衍射极限将可实现的最小线宽设置为波长的一半。使用亚波长等离子体透镜，允许人们通过不对称性减少衍射并产生和压缩波函数，入射光通过孔径聚焦到一条线，其宽度小于中间区域的有限值。聚焦场能够在自由空间中传播。这种光聚焦过程除了具有学术意义外，还有望开辟广泛的应用可能性。

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来源
《Optics Letters》 |2010年第22期|3763-3765|共3页
作者
K. R. Chen;
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作者单位

Department of Physics and Institute of Electro-Optical Science and Engineering, National Cheng Kung University, 1 University Road, Tainan 70101, Taiwan;

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正文语种英语
中图分类计量学;
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Focusing of light beyond the diffraction limit of half the wavelength

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