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Abstract
The longitudinal mode behavior of AlGaAs lasers with n-type cladding layers doped with Se and Si is reported. The longitudinal mode of the lasers with highly Se-doped cladding layer is stabilized, and large hysteresis of mode jump is observed as temperature changes. In the case of highly Si-doped cladding layers, however, the mode hops to the adjacent one and no hysteresis is observed. These phenomena are explained by the difference in thermal activation energy between Se- and Si-related DX centers.
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