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题名: Poynting vector, energy density, and energy velocity in an anomalous dispersion medium
作者: Huang, CG ;  Zhang, YZ
刊名: PHYSICAL REVIEW A
出版日期: 2002
卷号: 65, 期号:1, 页码:-
关键词: SUPERLUMINAL GROUP VELOCITIES ;  PROPAGATION
学科分类: Physics
通讯作者: Huang, CG , Chinese Acad Sci, Inst High Energy Phys, POB 918, Beijing 100039, Peoples R China, Peoples R China.
部门归属: Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China; CCAST, World Lab, Beijing 100080, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: The Poynting vector, energy density, and energy velocity of light pulses propagating in an anomalous dispersion medium with two closely spaced gain lines are calculated. The results show that a negative energy density in the medium propagates along the opposite direction of incidence with a velocity similar to the negative group velocity v. while Poynting vector is in the same direction of incidence. In other words, one might say that a positive energy density in the medium would propagate along the positive direction with a speed \v(g)\. We further point out that neither energy velocity nor group velocity is a good concept to describe the propagation process of light pulse inside the medium in the Wang, Kuzmich, and Dogaiu [Nature London) 406, 277 (2000)] experiment owing to the strong accumulation and dissipation effects.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000173273800115
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13620
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Huang, CG,Zhang, YZ. Poynting vector, energy density, and energy velocity in an anomalous dispersion medium[J]. PHYSICAL REVIEW A,2002,65(1):-.
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