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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 21, Iss. 7 — Jul. 1, 2004
  • pp: 1364–1368

Positive and negative dispersion in an Er3+-doped yttrium aluminum garnet crystal

Jun Qian, Hui-Fang Zhang, Jin-Yue Gao, and Jun Qian  »View Author Affiliations


JOSA B, Vol. 21, Issue 7, pp. 1364-1368 (2004)
http://dx.doi.org/10.1364/JOSAB.21.001364


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Abstract

We investigate a four-level system in the Er3+-doped yttrium aluminum garnet crystal that can produce an absorption or gain doublet in the probe absorption spectrum when driven by a coherent field and incoherent pumping. It is found that the transparent linear positive or negative dispersion can occur between the doublet lines. We show that the group index of a probe pulse can be manipulated when we control the incoherent pumping and the coherent field.

© 2004 Optical Society of America

OCIS Codes
(160.5690) Materials : Rare-earth-doped materials
(270.1670) Quantum optics : Coherent optical effects
(270.6620) Quantum optics : Strong-field processes

Citation
Jun Qian, Hui-Fang Zhang, Jin-Yue Gao, and Jun Qian, "Positive and negative dispersion in an Er3+-doped yttrium aluminum garnet crystal," J. Opt. Soc. Am. B 21, 1364-1368 (2004)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-21-7-1364

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