【摘要】 为了实现2μm激光高效输出,采用793nm激光二极管端面抽运掺Tm3+光纤激光器的方法设计了抽运光耦合系统,分析了掺Tm3+光纤激光器的交叉弛豫效应及热效应,并进行了相关的实验研究。结果表明,获得耦合系统的耦合效率为84%;当入纤抽运光功率为70W时,获得34W激光输出,斜率效率为59%,中心波长为2001.2nm,光束质量M2≤1.2。该研究结果对掺Tm3+光纤激光器的设计具有指导意义。更多还原

【Abstract】 To achieve 2μm laser output,793nm LD face-pumping Tm3 +-doped fiber laser was adopted. Double lens coupling system was designed. Cross relaxation of Tm3 +-doped fiber laser and thermal effect were analyzed,and then the related experiments were carried out. The results show that coupling efficiency of coupling system is 84%. When the pump power is 70W,the output power is 34W with slop efficiency of 59%,central wavelength of 2001. 2nm and M2of less than 1. 2. The results are helpful to design Tm3 +-doped fiber lasers.更多还原