| 反向Goos-H(a)nchen位移及负群时延 |
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| 引用本文： | 李春芳.反向Goos-H(a)nchen位移及负群时延[J].北京石油化工学院学报,2002,10(4):55-58. |
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| 作者姓名： | 李春芳 |
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| 作者单位： | 上海大学物理系,上海,200436;中国科学院西安光机所瞬态光学技术国家重点实验室,西安,710068 |
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| 摘 要： | 研究了光束通过空气中的光密介质板(量子力学方势阱的光学类比)时反射光束和透射光束的Goos-H(a)nchen位移及所需的群时延.结果表明,在非共振点上,反射光束和透射光束的Goos-H(a)nchen位移是相同的,并且在一定的条件下可以为负值,给出了Goos-H(a)nchen位移为负的充分条件和必要条件,讨论了该位移与Snell折射定律关系.同时给出了群时延为负的充分条件和必要条件.
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| 关 键 词： | Goos-H(a)nchen位移 群时延 光束传播 量子势阱 |
| 修稿时间： | 2002年5月25日 |
Reversed Goos-H(a)nchen Shift and Negative Group Delay |
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| Li Chunfang.Reversed Goos-H(a)nchen Shift and Negative Group Delay[J].Journal of Beijing Institute of Petro-Chemical Technology,2002,10(4):55-58. |
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| Authors: | Li Chunfang |
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| Abstract: | The Goos-Hanchen shifts and group delay of reflected and transmitted beams are studied when a beam of light travels through a plate of denser medium in the air,an optical analog of quantum square potential well. It is found that when resonance does not occur,the Goos-Hanchen shift of reflected beam is equal to that of transmitted beam and is negative under certain conditions. Sufficient and necessary conditions are given. The relation of the Goos-Hanchen shift and Snell's law is also discussed. In addition,the sufficient and necessary conditions for the group delay to be negative are given. |
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| Keywords: | Goos-Hanchen shift group delay traveling beam quantum potential well |
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