Is 'superluminal' light propagation possible in dispersive media?
文献类型：期刊论文
| 作者 | Chen, K ; Wu, LA ; Shih, YH |
| 刊名 | CHINESE PHYSICS LETTERS
 |
| 出版日期 | 2004 |
| 卷号 | 21期号:5页码:770 |
| 关键词 | PULSE-PROPAGATION TUNNELING TIME CAUSALITY LOCALIZATION VIOLATION VELOCITY SYSTEM DELAY |
| ISSN号 | 0256-307X |
| 通讯作者 | Chen, K: Chinese Acad Sci, Inst Phys, Lab Opt Phys, Beijing 100080, Peoples R China. |
| 中文摘要 | In a dispersive medium, different monochromatic modes of light have different phase velocities. Under special circumstances, a superposition of these modes results in an interesting effect wherein the group velocity (the velocity at which the peak of the wavepacket propagates) could be greater than c or even negative although the phase velocities of the modes are all less than c. Can this superluminal group velocity be used for information transfer? We show here that the 'superluminal' effect is due to a coherent optical wave superposition effect. Whatever the velocity of the 'peak', the whole pulse cannot travel with a speed greater than the fastest phase velocity of its component modes. Thus the maximum speed for information transfer, which involves the sending of a finite pulse, cannot be greater than the maximum phase velocity in the medium. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-18 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/40406]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Chen, K,Wu, LA,Shih, YH. Is 'superluminal' light propagation possible in dispersive media?[J]. CHINESE PHYSICS LETTERS,2004,21(5):770. |
| APA | Chen, K,Wu, LA,&Shih, YH.(2004).Is 'superluminal' light propagation possible in dispersive media?.CHINESE PHYSICS LETTERS,21(5),770. |
| MLA | Chen, K,et al."Is 'superluminal' light propagation possible in dispersive media?".CHINESE PHYSICS LETTERS 21.5(2004):770. |
入库方式： OAI收割
来源：物理研究所
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