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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Editor: Zhizhan Xu
  • Vol. 1, Iss. 1 — Jan. 20, 2003
  • pp: 47–49

What causes the superluminal propagation of light pulses

Shi-Yao Zhu and Li-Gang Wang  »View Author Affiliations


Chinese Optics Letters, Vol. 1, Issue 1, pp. 47-49 (2003)


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Abstract

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.

© 2005 Chinese Optics Letters

OCIS Codes
(030.1640) Coherence and statistical optics : Coherence
(260.2030) Physical optics : Dispersion
(270.5530) Quantum optics : Pulse propagation and temporal solitons
(320.5540) Ultrafast optics : Pulse shaping

Citation
Shi-Yao Zhu and Li-Gang Wang, "What causes the superluminal propagation of light pulses," Chin. Opt. Lett. 1, 47-49 (2003)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-1-1-47


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