瞬态光学研究室知识库

Improved rate equations are established for the new model of index-crossover gain guided-index antiguided (IGG-IAG) fiber, then the pump and signal light power distribution along the IGG-IAG fiber are investigated. Based on the thermal conduction equations, the 3D temperature distributions of a one-end-pumped and dual-end-pumped Nd3+-doped IGG-IAG fiber laser are further analyzed. The simulation results show that many factors have an important influence on fiber temperature. The temperature of the fiber with the dual-end-pump method is obviously lower than that with the one-end-pump method, and the temperature distribution is more uniform. The larger the R value, the lower the fiber temperature, and the smaller the -Delta n, the lower the fiber temperature. Thus proper fiber parameters and pump scheme may help to reduce the fiber temperature.