| 相位片角向衍射产生拉盖尔-高斯光束的实验研究 |
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| 引用本文： | 任煜轩,吴建光,周小为,付绍军,孙晴,王自强,李银妹.相位片角向衍射产生拉盖尔-高斯光束的实验研究[J].物理学报,2010,59(6):3930-3935. |
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| 作者姓名： | 任煜轩 吴建光 周小为 付绍军 孙晴 王自强 李银妹 |
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| 作者单位： | (1)中国科学技术大学国家同步辐射实验室，合肥 230029; (2)中国科学技术大学合肥微尺度物质科学国家实验室，合肥 230026；中国科学技术大学物理系，合肥 230026; (3)中国科学技术大学合肥微尺度物质科学国家实验室，合肥 230026；中国科学技术大学物理系，合肥 230026；中国科学技术大学安徽省光电子科学与技术重点实验室，合肥 230026; (4)中国科学技术大学物理系，合肥 230026 |
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| 基金项目： | 国家高技术研究发展计划 (批准号:2007AA021811, 2007AA021809)、中国科学院知识创新工程重要方向性项目(批准号:KJCX2-YW-H-10) 和中国科学技术大学研究生创新研究基金资助的课题. |
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| 摘 要： | 设计了一种角向分布的相位片，利用离子束刻蚀技术加工成0和π二级的相位片.利用角向衍射理论对相位片的衍射场分析表明，衍射场为拓扑指数相反的两束拉盖尔-高斯光束的叠加场.用直径为4 mm的近平行光照射相位片，获得径向指数为零，拓扑荷相反的叠加拉盖尔-高斯光场.采用较大孔径的光束入射时，仍为拓扑荷相反的两束光的叠加，但径向指数会发生变化.
关键词：
信息光学
拉盖尔-高斯光束
相位片
离子束刻蚀
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| 关 键 词： | 信息光学 拉盖尔-高斯光束 相位片 离子束刻蚀 |
| 收稿时间： | 2008-12-29 |
Experimental generation of Laguerre-Gaussian beam using angular diffraction of binary phase plate |
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| Ren Yu-Xuan,Wu Jian-Guang,Zhou Xiao-Wei,Fu Shao-Jun,Sun Qing,Wang Zi-Qiang,Li Yin-Mei.Experimental generation of Laguerre-Gaussian beam using angular diffraction of binary phase plate[J].Acta Physica Sinica,2010,59(6):3930-3935. |
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| Authors: | Ren Yu-Xuan Wu Jian-Guang Zhou Xiao-Wei Fu Shao-Jun Sun Qing Wang Zi-Qiang Li Yin-Mei |
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| Institution: | Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China;Department of Physics, University of Science and Technology of China, Hefei 230026, China;National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China;National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China;Department of Physics, University of Science and Technology of China, Hefei 230026, China;Department of Physics, University of Science and Technology of China, Hefei 230026, China;Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China;Key Laboratory of Optoelectronic Science and Technology of Anhui Province, University of Science and Technology of China, |
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| Abstract: | A phase plate was fabricated on a quartz crystal using ion beam etching technique with a predesigned angular phase mask, which can modulate the phase of light illuminating the phase plate by 0 and π rad. Analyzed the field distribution of the diffracted light by angular diffraction theory, which shows the resulting beam is a superposition of two Laguerre-Gaussian(LG) beams with opposite topological charges. Illuminating the phase plate using the expanded beam with diameter 4 mm generates the superposition of two LG beams with the same radian index p=0 and opposite angular index l=20 and l=-20 By increasing the aperture of the illuminating beam, LG beam with higher p index can be acquired, while the l index remains opposite. |
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| Keywords: | information optics Laguerre-Gaussian beam phase plate ion beam etching |
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