Gain measurements in GaInAsP/AlGaAs semiconductor laser with ridge-waveguide structure
Abstract
Gain characteristics of GalnAsP/AlGaAs lasers with ridge-waveguide structure emitting in the 600 nm band are measured using the Hakki-Paoli method. From the gain vs. current curve, the gain constant β and the current density at transparency J0 are estimated. The values obtained are 1.3 x 10-2 cm-μm/A and 14.3 kA/nm2- μm, respectively. Results obtained by other researchers for the same physical quantities for GalnAsP and other materials are cited for comparison purposes.