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| 三次相位调制参数对艾里光束的影响 |
| The influence of cubic phase modulation parameter on Airy beam |
| 投稿时间:2015-04-02 |
| DOI:10.3969/j.issn.1005-5630.2016.01.006 |
| 中文关键词: 三次相位调制参数 艾里光束 光瓣尺寸 光瓣间距 能量分布 |
| 英文关键词:cubic phase modulation parameter Airy beam spot size spot space intensity distribution |
| 基金项目:973基金资助项目(2015CB352001);上海市自然科学基金(14ZR1428500) |
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| 中文摘要: |
| 从理论角度与实验角度研究了三次相位调制参数对艾里光束的影响.理论上分析说明三次相位对应的频谱为艾里光束,并引入三次相位调制参数a3以表征相位变化速率.实验上通过设定不同的三次相位调制参数,观察其对艾里光束的影响.结果表明,三次相位调制参数可以影响艾里光束的光瓣尺寸、光瓣间距以及能量分布等,并确定a3最佳值在2~4之间. |
| 英文摘要: |
| In the paper, we theoretically and experimentally study the influence of cubic phase modulation parameter on Airy beam. In the theory, we demonstrate that the frequency spectrum induced by cubic phase is Airy beam. To represent the change rate of phase, we introduce the cubic phase modulation parameter a3. In the experiment, we observe the variation of Airy beam with different cubic phase modulation parameters. The results show that the parameter can regulate spot size of Airy beam, spot space and intensity distribution. And the optimum value of a3 is betweent 2 and 4. |
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