| 温度变化对谐衍射透镜性能的影响 |
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| 引用本文： | 邢德财,冯国英,杨李茗,周礼书.温度变化对谐衍射透镜性能的影响[J].光子学报,2005,34(4):624-627. |
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| 作者姓名： | 邢德财 冯国英 杨李茗 周礼书 |
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| 作者单位： | 四川大学电子信息学院,成都,610064;成都精密光学工程研究中心,成都,610041;四川大学电子信息学院,成都,610064;成都精密光学工程研究中心,成都,610041 |
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| 摘 要： | 分析了温度变化对谐衍射透镜的焦距、谐振波长、衍射效率等性能的影响，建立了相应的数学表达式，并对其进行了数值模拟.提出了漂移函数的概念，以表征焦距和谐振波长随温度的变化程度.另外，还给出了各谐振级次的衍射效率随温度变化的相关规律.最后比较了在相位匹配数不同、但设计波长相同时，温度变化对衍射效率的影响，发现相位匹配数越大，衍射效率对温度变化越敏感.
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| 关 键 词： | 谐衍射透镜 温度变化 漂移函数 衍射效率 |
| 收稿时间： | 2004-03-05 |
| 修稿时间： | 2004年3月5日 |
The Influence of Temperature Fluctuation upon Harmonic Diffractive Lenses Performance |
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| Xing Decai,Feng Guoying,Yang Liming,Zhou Lishu.The Influence of Temperature Fluctuation upon Harmonic Diffractive Lenses Performance[J].Acta Photonica Sinica,2005,34(4):624-627. |
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| Authors: | Xing Decai Feng Guoying Yang Liming Zhou Lishu |
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| Institution: | (1 School of Electronics and Information Science, Sichuan University,Chengdu 610064)
(2 Fine optical engineering research center, Sichuan Chengdu 610041) |
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| Abstract: | The influence of temperature fluctuation upon focal length, harmonic wavelength and diffraction efficiency of harmonic diffractive lenses was analyzed, correspondingly, the mathematic formulas were constructed and some numerical simulations were carried out. The shifting function, which denoted the degrees of focal length and harmonic wavelength varied with temperature fluctuation, was developed. The disciplinarians of harmonic diffractive lenses’ diffraction efficiency varying with temperature were listed. In the end, the influence of temperature fluctuation on harmonic diffractive lenses with different phase-matching number and the same designed wavelength was compared. The result indicates that the diffractive lens with lager phase-matching number was more sensitive to temperature fluctuation. |
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| Keywords: | Harmonic diffractive lenses Temperature fluctuation Shifting function Diffraction efficiency |
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