论文部分内容阅读
半导体激光器光纤耦合输出系统常被用作光纤激光器的抽运源,是光纤激光器的核心器件之一。针对芯径105μm、NA0.15的多模光纤,使用Zemax软件设计了一种基于双管的高亮度半导体激光器光纤耦合输出系统。该系统采用高精密准直技术、台阶加反射镜空间合束、偏振合束和慢轴扩束技术完成光束整形,最后使用非球面透镜聚焦耦合进芯径105μm、NA0.15的目标光纤。结合设计,在现有实验条件的基础上进行了等效验证实验。模拟和实验均表明:该系统可将16支双管耦合进芯径105μm、NA0.15的光纤,在注入电流为15A时,可获得稳定输出功率154 W,亮度达25 MW/(cm2·sr),对应电光效率为42%。该模块工程化后可广泛应用在光纤激光器抽运及工业加工等领域。
Semiconductor laser fiber coupled output system is often used as a pump fiber laser source, is one of the core fiber laser devices. For the multimode fiber with a core diameter of 105μm and NA0.15, a two-tube high-brightness semiconductor laser fiber-coupled output system is designed using Zemax software. The system uses high-precision collimation technique, step-and-space mirror combination, polarization combination and slow-axis beam expander to accomplish beam shaping. Finally, the aspheric lens is used to focus the target optical fiber with 105μm core diameter and NA0.15. Combined with the design, the equivalent verification experiment is carried out on the basis of the existing experimental conditions. Both simulation and experiment show that the system can couple 16 double tubes into a fiber with a diameter of 105μm and NA0.15. When the injection current is 15A, the system can obtain stable output power of 154 W and brightness of 25 MW / (cm2 · sr ), Corresponding to electro-optical efficiency of 42%. The module can be widely used in fiber laser pumping and industrial processing and other fields after engineering.