Focusing a beam beyond the diffraction limit using a hyperlens-based device
A super-focusing device composed of a focusing objective and a hyperlens is proposed to focus an incident plane wave into the deep subwavelength dimension. In the device, the objective converts the incident plane wave into a convergent one. The half cylindrical hyperlens can support high wave vector...
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| Veröffentlicht in: | Chinese physics B 2011-11, Vol.20 (11), p.506-511, Article 117802 |
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| creator | 郑国兴 张瑞瑛 李松 何平安 周辉 |
| description | A super-focusing device composed of a focusing objective and a hyperlens is proposed to focus an incident plane wave into the deep subwavelength dimension. In the device, the objective converts the incident plane wave into a convergent one. The half cylindrical hyperlens can support high wave vector k modes propagating towards its core. So the convergent wave can be focused into an ultrasmall spot beyond the diffraction limit. The layout is proposed for the super-focusing device and its characteristics are investigated theoretically. Numerical simulations verify that the focused beams are confined in a spot with a diameter of 16.3 nm in the focal plane of the focusing objective with a numerical aperture of 0.6, which corresponds to a super-resolution spot of λ0/23 （λ0 is the wavelength in vacuum）. The simulations confirm the effectiveness of the proposed device. |
| doi_str_mv | 10.1088/1674-1056/20/11/117802 |
| format | Article |
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In the device, the objective converts the incident plane wave into a convergent one. The half cylindrical hyperlens can support high wave vector k modes propagating towards its core. So the convergent wave can be focused into an ultrasmall spot beyond the diffraction limit. The layout is proposed for the super-focusing device and its characteristics are investigated theoretically. Numerical simulations verify that the focused beams are confined in a spot with a diameter of 16.3 nm in the focal plane of the focusing objective with a numerical aperture of 0.6, which corresponds to a super-resolution spot of λ0/23 （λ0 is the wavelength in vacuum）. 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The simulations confirm the effectiveness of the proposed device.</description><subject>Beams (radiation)</subject><subject>Computer simulation</subject><subject>Devices</subject><subject>Diffraction</subject><subject>Focal plane</subject><subject>Focusing</subject><subject>Plane waves</subject><subject>Wave propagation</subject><subject>入射平面波</subject><subject>双曲</subject><subject>对焦</subject><subject>数值孔径</subject><subject>目标转换</subject><subject>聚焦光束</subject><subject>衍射极限</subject><subject>设备组成</subject><issn>1674-1056</issn><issn>2058-3834</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNqFkV1LwzAUhoMoOKd_QeqdN3UnH01b8EbEqTjwRq9Dmp5ukX6t6YT9e1M6J8hgEBI4PG_OyRNCrincUUiSGZWxCClEcsZgRqlfcQLshEwYREnIEy5OyWQPnZML574AJAXGJ-Rt3piNs_Uy0EGGuvLbtqnzoF9hkNui6LTpbVMHpa1sH_ySq22LXYm1CzPtMA9y_LYGL8lZoUuHV7tzSj7nTx-PL-Hi_fn18WERGsHiPuSFzKiJI2GYjLHIU0hNFKFB4SdPMRe0AJlQxkWOiZSSGeBpmmYAkFH075mS2_HetmvWG3S9qqwzWJa6xmbjFI29ABmJWBxHwStMIwHco3JETdc412Gh2s5Wutt6SA2i1eBQDQ4V8xWqRtE-eP8vaGyvB2t9p215PB6Ocdu0fy0PsqrNC8_TA_yxHje7EVdNvVz7T9wnvVrBJRX8B3ZnqNE</recordid><startdate>20111101</startdate><enddate>20111101</enddate><creator>郑国兴 张瑞瑛 李松 何平安 周辉</creator><general>IOP Publishing</general><scope>2RA</scope><scope>92L</scope><scope>CQIGP</scope><scope>~WA</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope></search><sort><creationdate>20111101</creationdate><title>Focusing a beam beyond the diffraction limit using a hyperlens-based device</title><author>郑国兴 张瑞瑛 李松 何平安 周辉</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c427t-3f6b1c754c267efd909c55ece41179ed41f0681234de86662c03999b000b1e383</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Beams (radiation)</topic><topic>Computer simulation</topic><topic>Devices</topic><topic>Diffraction</topic><topic>Focal plane</topic><topic>Focusing</topic><topic>Plane waves</topic><topic>Wave propagation</topic><topic>入射平面波</topic><topic>双曲</topic><topic>对焦</topic><topic>数值孔径</topic><topic>目标转换</topic><topic>聚焦光束</topic><topic>衍射极限</topic><topic>设备组成</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>郑国兴 张瑞瑛 李松 何平安 周辉</creatorcontrib><collection>中文科技期刊数据库</collection><collection>中文科技期刊数据库-CALIS站点</collection><collection>中文科技期刊数据库-7.0平台</collection><collection>中文科技期刊数据库- 镜像站点</collection><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Chinese physics B</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>郑国兴 张瑞瑛 李松 何平安 周辉</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Focusing a beam beyond the diffraction limit using a hyperlens-based device</atitle><jtitle>Chinese physics B</jtitle><addtitle>Chinese Physics</addtitle><date>2011-11-01</date><risdate>2011</risdate><volume>20</volume><issue>11</issue><spage>506</spage><epage>511</epage><pages>506-511</pages><artnum>117802</artnum><issn>1674-1056</issn><eissn>2058-3834</eissn><abstract>A super-focusing device composed of a focusing objective and a hyperlens is proposed to focus an incident plane wave into the deep subwavelength dimension. 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| fulltext | fulltext |
| identifier | ISSN: 1674-1056 |
| ispartof | Chinese physics B, 2011-11, Vol.20 (11), p.506-511, Article 117802 |
| issn | 1674-1056 2058-3834 |
| language | eng |
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| source | IOP Publishing Journals |
| subjects | Beams (radiation) Computer simulation Devices Diffraction Focal plane Focusing Plane waves Wave propagation 入射平面波 双曲 对焦 数值孔径 目标转换 聚焦光束 衍射极限 设备组成 |
| title | Focusing a beam beyond the diffraction limit using a hyperlens-based device |
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