摘要
采用传能光纤替代导光臂传输激光能量能够极大地改善医用手柄的灵活性、降低系统复杂程度、提高激光传输效率。设计研制了2.79μm Er,Cr:YSGG激光器及其光纤耦合系统。分析了激光器谐振腔输出镜对输出高斯光束参数的影响,设计弯月型透镜作为激光器谐振腔输出镜减小激光光束发散角,并选择合适的耦合单透镜,满足了数值孔径为0.29、芯径为400μm的ZBLAN玻璃光纤耦合条件。实验结果表明,在弯月型透镜作为激光输出镜,耦合透镜焦距为20 mm时,可实现激光传输耦合效率高达83%,最大传输功率6 W,满足了激光医疗仪器的临床应用需求。
Using the energy transmitting fiber to replace the optical guide arm can greatly improve the flexibility of the medical handle,reduce the complexity of the system and improve the efficiency of laser transmission.A 2.79μm Er,Cr:YSGG laser and its fiber coupling system were designed and developed.The influence of the output mirror of the laser resonator on the parameters of the output Gaussian beam was analyzed.A meniscus type lens was designed as the output mirror of the laser resonator to reduce the divergence angle of the laser beam,and a suitable coupling single lens was selected to meet the coupling conditions of the ZBLAN glass fiber with a numerical aperture of 0.29 and a core diameter of 400μm.The experimental results show that when the meniscus type lens is used as the laser output mirror and the focal length of the coupling lens is 20 mm,the coupling efficiency of the laser transmission can reach up to 83%,and the maximum transmission power is 6 W,which meets the clinical application requirements of the laser medical instrument.
作者
黄磊
熊正东
程庭清
江海河
Huang Lei;Xiong Zhengdong;Cheng Tingqing;Jang Haihe(Institute of Material Science and Information Technology,Anhui University,Hefei 230601,China;Institute of Health and Medical Technology,Hefei Institute of Physical Science,Chinese Academy of Sciences,Hefei 230031,China;University of Science and Technology of China,Hefei 230026,China)
出处
《红外与激光工程》
EI
CSCD
北大核心
2021年第S02期55-60,共6页
Infrared and Laser Engineering
基金
国家自然科学基金(61675212)
国家重点研发计划(2018YFB0407204)
作者简介
黄磊,男,硕士生,主要从事固体激光技术方面的研究;江海河,男,研究员,博士生导师,硕士,主要从事激光技术与光机电一体化应用方面的研究。
