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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 7, Iss. 1 — Jan. 1, 1990
  • pp: 134–137

Influence of the refractive-index step on the threshold current density in antiguiding active slabs

J. Fesquet  »View Author Affiliations


JOSA B, Vol. 7, Issue 1, pp. 134-137 (1990)
http://dx.doi.org/10.1364/JOSAB.7.000134


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Abstract

In an active waveguide in which the refractive index of the inner part is smaller than that of the outer part, there is modal gain if the field-medium gain is higher than a threshold value that is a function of the refractive-index step. The threshold current density is shown to decrease as the refractive-index step increases. This behavior can be explained by considering the interplay between the creation of energy in the medium gain and lateral loss.

© 1990 Optical Society of America

Citation
J. Fesquet, "Influence of the refractive-index step on the threshold current density in antiguiding active slabs," J. Opt. Soc. Am. B 7, 134-137 (1990)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-7-1-134

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