Single longitudinal mode operation of Er-doped 1.5-μm InGaAsP lasers

van der Ziel, J. P.; Oberg, M. G.; Logan, R. A.
May 1987
Applied Physics Letters;5/11/1987, Vol. 50 Issue 19, p1313
Academic Journal
We attribute the single longitudinal mode operation of some Er-doped 1.5-μm InGaAsP lasers, observed here, to inhomogeneities in the active layer resulting from the Er. These results do not rule out the possibility of gain narrowing by the Er when Er is properly incorporated in the active layer.


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