Intense supercontinuum generation in the near-ultraviolet range from a 400-nm femtosecond laser filament array in fused silica
An intense supercontinuum（SC） in the near-ultraviolet range is generated from filamentation by focusing a 400-nm laser into fused silica with a microlens array（MLA）. The spectrum of the SC is shown to be sensitive to the distance between the MLA and fused silica. In our optimal conditions, the near-...
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| Published in | Chinese physics B Vol. 26; no. 7; pp. 149 - 152 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
01.06.2017
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1674-1056 2058-3834 |
| DOI | 10.1088/1674-1056/26/7/074213 |
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| Abstract | An intense supercontinuum（SC） in the near-ultraviolet range is generated from filamentation by focusing a 400-nm laser into fused silica with a microlens array（MLA）. The spectrum of the SC is shown to be sensitive to the distance between the MLA and fused silica. In our optimal conditions, the near-ultraviolet SC can cover a range of 350-600 nm,where a bandwidth of approximately 55 nm above the 1μJ/nm spectral energy density and 20 nm bandwidth with tens ofμJ/nm are achieved. In addition, the energy conversion efficiency of the 400 nm laser for SC generation is further analyzed.A maximum conversion efficiency of 66% is obtained when the entrance face of fused silica is set around the focus of the MLA. |
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| AbstractList | An intense supercontinuum（SC） in the near-ultraviolet range is generated from filamentation by focusing a 400-nm laser into fused silica with a microlens array（MLA）. The spectrum of the SC is shown to be sensitive to the distance between the MLA and fused silica. In our optimal conditions, the near-ultraviolet SC can cover a range of 350-600 nm,where a bandwidth of approximately 55 nm above the 1μJ/nm spectral energy density and 20 nm bandwidth with tens ofμJ/nm are achieved. In addition, the energy conversion efficiency of the 400 nm laser for SC generation is further analyzed.A maximum conversion efficiency of 66% is obtained when the entrance face of fused silica is set around the focus of the MLA. |
| Author | 李东伟 张兰芝 Saba Zafar 宋鹤 郝作强 奚婷婷 高勋 林景全 |
| AuthorAffiliation | School of Science, Changchun University of Science and Technology, Changchun 130022, China School of Physics, University of Chinese Academy of Sciences, Beijing 101407, China |
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| Notes | An intense supercontinuum（SC） in the near-ultraviolet range is generated from filamentation by focusing a 400-nm laser into fused silica with a microlens array（MLA）. The spectrum of the SC is shown to be sensitive to the distance between the MLA and fused silica. In our optimal conditions, the near-ultraviolet SC can cover a range of 350-600 nm,where a bandwidth of approximately 55 nm above the 1μJ/nm spectral energy density and 20 nm bandwidth with tens ofμJ/nm are achieved. In addition, the energy conversion efficiency of the 400 nm laser for SC generation is further analyzed.A maximum conversion efficiency of 66% is obtained when the entrance face of fused silica is set around the focus of the MLA. Dongwei Li1,Lanzhi Zhang1,Saba Zafar1,He Song1,Zuoqiang Hao1,Tingting Xi2,Xun Gao1,Jingquan Lin1（ 1 School of Science, Changchun University of Science and Technology, Changchun 130022, China ; 2School of Physics, University of Chinese Academy of Sciences, Beijing 101407, China） filamentation; supercontinuum generation; microlens array; fused silica 11-5639/O4 |
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| References | 11 22 12 23 13 14 15 17 18 19 1 Zhang L Z (16) 2016; 49 2 3 4 5 6 7 8 9 20 10 21 |
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| Snippet | An intense supercontinuum（SC） in the near-ultraviolet range is generated from filamentation by focusing a 400-nm laser into fused silica with a microlens... |
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| SubjectTerms | MLA 激光列阵 石英微透镜阵列 石英晶体 紫外波段 能量转换效率 超连续谱 飞秒 |
| Title | Intense supercontinuum generation in the near-ultraviolet range from a 400-nm femtosecond laser filament array in fused silica |
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