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   Home  List of Issues    Issue 01 , Vol. 01 , 2003    Article Abstract

What causes the superluminal propagation of light pulses
Shi-Yao Zhu and Li-Gang Wang
Chinese Optics Letters , Vol.01 , Issue 01 , PP.47-47(2003)

Keywords(OCIS Code)
270.5530 (pulse propagation and solitons), 030.1640 (coherence), 260.2030 (dispersion), 320.5540 (pulse shaping).

In this paper, we discuss what causes the superluminal propagation of a pulse through dispersion by solving Maxwell's equations without any approximation. The coherence of the pulse plays an important role for superluminal propagation. When the pulse becomes partially coherent, the propagation changes from superluminal to subluminal. The energy velocity is always less than the vacuum velocity. The shape of the pulse is changed during the propagation.

©2003-2007 Chinese Optics Letters

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Original Manauscript:
Manuscript Accepted:2002-11-1
Revised Manuscript:
Published :

Column:quantum optics
Note: S.-Y. Zhu's e-mail address is syzhu@hkbu.edu.hk.


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