Negative group velocity and distortion of a pulse in an anomalous dispersion medium
文献类型：期刊论文
| 作者 | Huang CG(黄超光) ; Huang, CG; Zhang, YZ
|
| 刊名 | JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS
 |
| 出版日期 | 2002 |
| 卷号 | 4期号:3页码:#REF! |
| 关键词 | negative group velocity anomalous dispersion medium |
| 通讯作者 | Huang, CG (reprint author), Chinese Acad Sci, Inst High Energy Phys, POB 918, Beijing 100039, Peoples R China. |
| 英文摘要 | Analysis of an infinitely long train of sine-squared pulses-as a toy model-propagating in a medium exhibiting anomalous dispersion shows that although the shape of the light pulses seems to be almost preserved on a small scale, the pulses are severely distorted on a large scale. The frequency of the sine-squared pulses is doubled before they propagate a tenth of the width (FWHM) of a pulse in the medium. The analysis and a numerical calculation show that the front of a wave with a step-function envelope propagates at the speed of light, c, through a medium with two gain lines. Finally, the propagation of a Gaussian pulse-a more realistic pulse-in a medium exhibiting anomalous dispersion is studied. The distortion of the pulse in a Wang-Kuzmich-Dogariu (WKD) experiment (Wang L J, Kuzmich A and Dogariu A 2000 Nature 406 277) should be observable at a precision of +/-1 ns. If a Gaussian pulse travels in the medium for 1150 of a width (FWHM), it will collapse. 'Snapshots' of a Gaussian pulse show that the shape of the pulse in space will have more than one peak at certain times. A possible picture of light propagation in WKD-like experiments is proposed on the basis on these findings. |
| 学科主题 | Optics |
| 类目[WOS] | Optics |
| 收录类别 | SCI |
| WOS记录号 | WOS:000176112300009 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/227275]  |
| 专题 | 高能物理研究所_理论物理室 |
| 推荐引用方式 GB/T 7714 | Huang CG,Huang, CG,Zhang, YZ. Negative group velocity and distortion of a pulse in an anomalous dispersion medium[J]. JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS,2002,4(3):#REF!. |
| APA | 黄超光,Huang, CG,&Zhang, YZ.(2002).Negative group velocity and distortion of a pulse in an anomalous dispersion medium.JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS,4(3),#REF!. |
| MLA | 黄超光,et al."Negative group velocity and distortion of a pulse in an anomalous dispersion medium".JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS 4.3(2002):#REF!. |
入库方式： OAI收割
来源：高能物理研究所
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