Abstract
We investigated the power-frequency bistability of a grating external cavity laser diode (ECLD), which operates in the strong feedback regime, by studying the threshold carrier density and related refractive index. The frequency width of the hysteresis loop has been expressed in an explicit analytical form in terms of the linewidth enhancement factor, and the reflectivities of the external grating reflector as well as the diode facet that faces it.
© 1999 Optical Society of America
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