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对连续波高功率掺镱光纤激光器(YDFL)的输出特性及影响因素进行了实验研究。结果表明,双色镜相对于光纤轴向的倾斜角对激光器阈值和输出功率有影响,当双色镜偏离光纤轴向垂直方向时,激光器阈值增大、输出功率降低;当偏离角度小于±2°时,该倾斜角对激光器阈值和输出功率的影响较小。增益光纤有效长度也影响激光器的阈值和输出功率,并决定激光器自由振荡波长,增加掺杂光纤有效增益长度,激光振荡波长向长波长方向移动。
The output characteristics and influential factors of continuous wave high power Ytterbium-doped fiber laser (YDFL) were experimentally studied. The results show that the tilt angle of the dichroic mirror with respect to the axial direction of the fiber affects the laser threshold and the output power. When the dichroic mirror deviates from the axial direction of the fiber, the laser threshold increases and the output power decreases. When the deviation angle is less than ± 2 ° This tilt angle has less effect on the laser threshold and output power. The effective length of the gain fiber also affects the threshold and output power of the laser, determines the free oscillation wavelength of the laser, increases the effective gain length of the doped fiber, and moves the laser oscillation wavelength to the long wavelength.