Direct optical absorption measurements in gaseous media by the cavity ring-down spectroscopy technique for the development of a lossmeter

摘要

In this research we have solved the rate equations for GaAs/AlGaAs self-assembledquantum dot laser with considering the homogeneous and inhomogeneous broadening of the opticalgain using fourth order Runge-Kutta method. With increasing the full width at half maximum(FWHM) of homogeneous broadening, the threshold current, turn-on delay and steady-state photonsincrease because of increasing the density of states in the central group. Our calculation results showalso that the simulated self-assembled dot laser reaches the steady-state faster and the lasing emissionis not single mode due to the gain saturation.