Simulation of Raman spontaneous scattering factor effect on Stoke Raman and passive Q-switching pulses characteristic

Abstract

Abstract The effect of Raman spontaneous scattering Factor (Ksp ) on characteristics of passive Q- switching and Raman pulses of (Nd:YVO4, Cr+4:YAG and BaWO4) system has been simulated. A software computer program based in this study to solve the rate equations model using Runge- kutta - Fehalberg numerical method. The study shows that the increase in the value of Ksp leads to an increase photons density, energy, and, the power of passive Q-switching and Raman pulses. While small effect on pulses duration. The final value of the population inversion decreases with the increase of Ksp .