Theory of a synchronously pumped mode-locked dye laser in the short pump pulse limit

D. L. MacFarlane, Lee W. Casperson
1989 Journal of the Optical Society of America. B, Optical physics  
We study the operation of a synchronously pumped mode-locked dye laser when the pump pulse is taken as a Dirac delta function, a limit that is sometimes experimentally reasonable. We find that in this limit the model simplifies considerably and that with further assumptions the physical interpretation of synchronously pumped mode-locked operation becomes apparent. Specifically, our nonlinear dynamical model reduces to the same set of equations that govern a prepumped Q-switched laser, and from
more » ... his simple picture we are able to derive approximate analytic formulas for the synchronously pumped mode-locked laser pulse width and peak intensity. Additionally, we present a closed-form solution for the output pulse in the limit of zero-cavity-length mismatch between the pump laser and the dye laser.
doi:10.1364/josab.6.001175 fatcat:pvmewp3oancohhsjmuv5kxra54