Which group velocity of light in a dispersive medium?

被引：1
|
作者：
El Gawhary, O. [1 ]
Severini, S. [2 ]
Christillin, P. [3 ]
机构：
[1] Delft Univ Technol, Opt Res Grp, Dept Imaging Sci & Technol, NL-2628 CJ Delft, Netherlands
[2] Ctr Interforze Studi Applicazioni Militari, I-56122 San Piero A Grado, PI, Italy
[3] Univ Pisa, Dipartimento Fis, I-56127 Pisa, Italy
来源：
EUROPEAN PHYSICAL JOURNAL PLUS | 2011年 / 126卷 / 01期
关键词：
Wave Packet; Group Velocity; Light Pulse; Dispersive Medium; Dispersive Property;
D O I：
10.1140/epjp/i2011-11006-0
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The interaction between a light pulse, traveling in air, and a generic linear, non-absorbing and dispersive structure is analyzed. It is shown that energy conservation imposes a constraint between the group velocities of the transmitted and reflected light pulses. It follows that the two fields propagate with group velocities depending on the dispersive properties of the environment (air) and on the transmission properties of the optical structure, and are one faster and the other slower than that of the incident field. In other words, the group velocity of a light pulse in a dispersive medium is reminiscent of previous interactions. One example is discussed in detail.
引用
收藏
页码：1 / 5
页数：5
相关论文
共 50 条
12345