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arXiv 0810.0282physics.optics
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光在色散介质中的群速度是多少?

Which group velocity of light in a dispersive medium?

Omar El Gawhary, Sergio Severini, Paolo Christillin

摘要:

分析了在空气中传播的光脉冲与一般线性、非吸收和色散结构之间的相互作用。它示出了能量守恒施加之间的约束的传输和反射的光脉冲的群速度。因此,这两个场根据环境(空气)的色散特性和光学结构的传输特性以群速度传播,并且一个比入射场快,另一个比入射场慢。换句话说,光脉冲在色散介质中的群速度让人想起以前的相互作用。详细讨论了一个例子。

英文摘要:

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 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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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