CAJ | 학술논문

为满足医用激光传能要求，使用CO2激光对直径分别为550μm和750μm的两组蓝宝石单晶光纤进行了塑性弯曲，平均弯曲半径为3.0mm，由单个弯曲引起的额外损耗在900nm处小于0.1dB，对脉冲Nd:YAG激光能量传输的损伤阈值高于30MW/cm2。实验结果表明，塑性弯曲蓝宝石光纤完全可满足医用激光传能的要求，并可减小输出端弯曲光纤头的体积，增大光纤激光传输应用系统的灵活性。
위만족의용격광전능요구，사용CO2격광대직경분별위550μm화750μm적량조람보석단정광섬진행료소성만곡，평균만곡반경위3.0mm，유단개만곡인기적액외손모재900nm처소우0.1dB，대맥충Nd:YAG격광능량전수적손상역치고우30MW/cm2。실험결과표명，소성만곡람보석광섬완전가만족의용격광전능적요구，병가감소수출단만곡광섬두적체적，증대광섬격광전수응용계통적령활성。
In order to facilitate the medical laser transmission,in thispaper,weve plastically bent two groups of sapphire fibers with diameters of 550 μm and 750 μm by means of CO2 lasers,the average bending radius is 3.0 mm,the additional loss caused by a single bend is less than 0.1 dB at 900 nm,the damage threshold is higher than 30 MW/cm2 for Nd:YAG laser pulses.Experimental results show that plastically bent sapphire fibers can meet the demands of medical laser transmission with much smaller output fiber-tip sizes,and improve the flexibility of fiber-optic laser transmission systems.