Ti：sapphire laser performances and the dependence upon the part parameters

According to the optimum design theory of a longitudinally pumped laser,the optimum slope efficiency of a laser of Ti:sapphire with different FOM value,the maximum output power of a laser of Ti:sapphire with different Q value for different pumping power,the threshold,the optimum part length and transmittance of the output mirror have been calculated.The possibility of improving laser performances are discussed as well.