Abstract
Using perturbation analysis to solve the rate equations of semiconductor lasers, the analytical expressions for the evolution of the carrier and photon densities have been derived when the laser is switched from one oscillation mode (or wavelength) to another. The solutions show that the deviations of the carrier and photon densities are damped and oscillatory. The decay rate of these deviations depends not only on the carrier lifetime, but also on the photon lifetime, which is different from that of an ordinary diode laser experiencing switch-on processes.
Published Version
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