中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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; Zhang, YZ; Huang, CG , Chinese Acad Sci, Inst High Energy Phys, POB 918, Beijing 100039, Peoples R China.
刊名JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS
出版日期2002
卷号4期号:3页码:263-270
关键词Light-pulse Propagation
ISSN号1464-4258
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Physics
URL标识查看原文
WOS记录号WOS:000176112300009
公开日期2012-08-29
源URL[http://ir.itp.ac.cn/handle/311006/13524]  
专题理论物理研究所_理论物理所1978-2010年知识产出
通讯作者Huang, CG , Chinese Acad Sci, Inst High Energy Phys, POB 918, Beijing 100039, Peoples R China.
推荐引用方式
GB/T 7714
Huang, CG,Zhang, YZ,Huang, CG , Chinese Acad Sci, Inst High Energy Phys, POB 918, Beijing 100039, Peoples R China.. 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):263-270.
APA Huang, CG,Zhang, YZ,&Huang, CG , Chinese Acad Sci, Inst High Energy Phys, POB 918, Beijing 100039, Peoples R China..(2002).Negative group velocity and distortion of a pulse in an anomalous dispersion medium.JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS,4(3),263-270.
MLA Huang, CG,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):263-270.

入库方式: OAI收割

来源:理论物理研究所

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