All-silicon nanorod-based Dammann gratings
文献类型：期刊论文
| 作者 | Li, Zile1; Zheng, Guoxing1,2; He, Ping'An1; Li, Song1,2; Deng, Qiling; Zhao, Jiangnan; Ai, Yong |
| 刊名 | Optics Letters
 |
| 出版日期 | 2015 |
| 卷号 | 40期号:18页码:4285-4288 |
| ISSN号 | 0146-9592 |
| 通讯作者 | Zheng, Guoxing (gxzheng@whu.edu.cn) |
| 中文摘要 | Established diffractive optical elements (DOEs), such as Dammann gratings, whose phase profile is controlled by etching different depths into a transparent dielectric substrate, suffer from a contradiction between the complexity of fabrication procedures and the performance of such gratings. In this Letter, we combine the concept of geometric phase and phase modulation in depth, and prove by theoretical analysis and numerical simulation that nanorod arrays etched on a silicon substrate have a characteristic of strong polarization conversion between two circularly polarized states and can act as a highly efficient half-wave plate. More importantly, only by changing the orientation angles of each nanorod can the arrays control the phase of a circularly polarized light, cell by cell. With the above principle, we report the realization of nanorod-based Dammann gratings reaching diffraction efficiencies of 50%-52% in the C-band fiber telecommunications window (1530-1565 nm). In this design, uniform 4 × 4 spot arrays with an extending angle of 59° × 59° can be obtained in the far field. Because of these advantages of the single-step fabrication procedure, accurate phase controlling, and strong polarization conversion, nanorod-based Dammann gratings could be utilized for various practical applications in a range of fields. © 2015 Optical Society of America. |
| 英文摘要 | Established diffractive optical elements (DOEs), such as Dammann gratings, whose phase profile is controlled by etching different depths into a transparent dielectric substrate, suffer from a contradiction between the complexity of fabrication procedures and the performance of such gratings. In this Letter, we combine the concept of geometric phase and phase modulation in depth, and prove by theoretical analysis and numerical simulation that nanorod arrays etched on a silicon substrate have a characteristic of strong polarization conversion between two circularly polarized states and can act as a highly efficient half-wave plate. More importantly, only by changing the orientation angles of each nanorod can the arrays control the phase of a circularly polarized light, cell by cell. With the above principle, we report the realization of nanorod-based Dammann gratings reaching diffraction efficiencies of 50%-52% in the C-band fiber telecommunications window (1530-1565 nm). In this design, uniform 4 × 4 spot arrays with an extending angle of 59° × 59° can be obtained in the far field. Because of these advantages of the single-step fabrication procedure, accurate phase controlling, and strong polarization conversion, nanorod-based Dammann gratings could be utilized for various practical applications in a range of fields. © 2015 Optical Society of America. |
| 学科主题 | Circular polarization - Dielectric materials - Diffraction gratings - Light polarization - Nanorods - Phase control - Phase modulation - Polarization |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000361556700025 |
| 源URL | [http://ir.ioe.ac.cn/handle/181551/7331]  |
| 专题 | 光电技术研究所_微电子装备总体研究室（四室） |
| 作者单位 | 1.School of Electronic Information, Wuhan University, Wuhan 2.430072, China 3.Cooperative Innovation Center of Geospatial Technology, Wuhan University, Wuhan 4.430079, China 5.Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 6.610209, China |
| 推荐引用方式 GB/T 7714 | Li, Zile,Zheng, Guoxing,He, Ping'An,et al. All-silicon nanorod-based Dammann gratings[J]. Optics Letters,2015,40(18):4285-4288. |
| APA | Li, Zile.,Zheng, Guoxing.,He, Ping'An.,Li, Song.,Deng, Qiling.,...&Ai, Yong.(2015).All-silicon nanorod-based Dammann gratings.Optics Letters,40(18),4285-4288. |
| MLA | Li, Zile,et al."All-silicon nanorod-based Dammann gratings".Optics Letters 40.18(2015):4285-4288. |
入库方式： OAI收割
来源：光电技术研究所
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