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arXiv 0901.4623physics.opticsphysics.plasm-ph
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聚焦超过衍射极限的光

Focusing of light beyond the diffraction limit

K. R. Chen

摘要:

衍射限制了光在光学系统中的行为,并将可实现的最小线宽设置为波长的一半。利用一种新型的亚波长等离子体透镜,通过非对称性降低衍射,产生并挤压波函数,入射光被孔径聚焦成一条宽度超过近区极限的单线。聚焦的场是辐射性的,能够传播到远区。光聚焦过程,除了学术上的兴趣,预计将开辟广泛的应用可能性。

英文摘要:

Diffraction limits the behaviour of light in optical systems and sets the smallest achievable line width at half the wavelength. With a novel subwavelength plasmonic lens 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 beyond the limit outside the near zone. The fields focused are radiative and capable of propagating to the far zone. The light focusing process, besides being of academic interest, is expected to open up a wide range of application possibilities.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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