Study the effect of output coupler mirror reflectivity on Stokes Raman laser pulse characteristics

The effect of output coupler mirrors reflectivity on characteristics of Stokes Raman pulse, which is generated from passive Q-switching intracavity Raman media laser system has been studied. A software computer program based on this study to solve the rate equations of instantaneous performance of the mentioned system (Nd:YVO4, Cr+4:YAG and BaWO4 ) numerically by Runge- kutta-Fehalberg method. The study shows that the energy, duration, and the power of the pulse increasing when the output coupler mirrors reflectivity increasing.