Asymmetric gain induced by longitudinal spatial carrier burning in semiconductor lasers

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Abstract
Nonlinear gain caused by dielectric corrugation resulting from the cavity standing wave of a lasing mode in semiconductor lasers is investigated using the perturbation approach. The results show that the nonlinear gain spectrum is asymmetric when the linewidth enhancement factor α ≠ 0, and the possibility of single mode operation is greater at α = 0.