TRANSIENT MULTIMODE STATISTICS IN ALMOST SINGLE-MODE SEMICONDUCTOR-LASERS

The transient statistics of an almost single-mode semiconductor laser biased below threshold is studied. We characterise the statistics of r are turn-on events in which the depressed mode carries significant out put power in terms of output power at turn-on and mean power during du ration of the optical pulse for the main and side modes. The turn-on t ime is defined as the time at which the total output power reaches a p rescribed value. The statistics of power partition at turn-on time is obtained analytically and numerically for different excitation current s and gain differences. Numerical results for the statistics of mean p ower partition during pulse emission are presented. A simple relation between both characterisations is found.