Kagome空芯光纤的脉冲激光传输特性研究  

Characterization of pulsed laser transmission in Kagome hollow-core fiber

作　　者：王浪 崔建丰[1,2] 岱钦 栾智杰[1] 邬小娇 李福玖 乌日娜 WANG Lang;CUI Jian-feng;DAI Qin;LUAN Zhi-jie;WU Xiao-jiao;LI Fu-jiu;UZHINA(School of Science,Shenyang Ligong University,Shenyang 110159,China;Anshan ZY Laser Technology Co.,Ltd.,Anshan 114044,China)

机构地区：[1]沈阳理工大学理学院,辽宁沈阳110159 [2]鞍山紫玉激光科技有限公司,辽宁鞍山114044

出　　处：《激光与红外》2025年第1期155-160,共6页Laser & Infrared

基　　金：国家重点研发计划(No.2022YFB4601603);2022年辽宁省“揭榜挂帅”科技计划重点项目;沈阳理工大学光选科研团队建设项目资助。

摘　　要：为了研究空芯光纤对纳秒脉冲激光的传输能力,使用Kagome型反谐振空芯光纤进行了1064 nm脉冲激光的传输实验。光纤的纤芯直径为60μm,数值孔径为0.02。使用中心波长为1064 nm,脉冲宽度为8.4 ns的电光调Q激光器作为光源,测试了光纤在纳秒脉冲激光传输中的光束模式及传能效果。结果显示,该空芯光纤能够在保持基模的状态下,稳定传输10.25 mJ的纳秒脉冲,传输效率高达88%。此外,还系统分析了高功率脉冲激光对空芯光纤的损伤机理过程。研究结果表明,Kagome型反谐振空芯光纤在1064 nm波段能够实现10 mJ的纳秒脉冲传输,可以用作激光触发真空开关技术等应用的柔性光源。In order to investigate the transmission capability of hollow-core fibers for nanosecond pulsed lasers,1064 nm pulsed laser transmission experiments are carried out using a Kagome-type anti-resonant hollow-core fiber.The core diameter of the fiber is 60um and the numerical aperture is 0.02.Using an electro-optic Q-modulated laser with a central wavelength of 1064 nm and a pulse width of 8.4 ns as the light source,the beam pattern and energy transfer effect of the fiber in nanosecond pulsed laser transmission are tested.The results show that the hollow-core optical fiber is capable of stably transmitting nanosecond pulses of 10.25 mJ with transmission efficiency as high as 88%while maintaining the fundamental mode.In addition,the damage mechanism process of high-power pulsed laser on the hollow-core fiber is systematically analyzed.The results show that the Kagome-type anti-resonant hollow-core fiber is capable of transmitting 10 mJ nanosecond pulses in the 1064 nm band and can be used as a flexible light source for applications such as laser-triggered vacuum switching technology.

关 键 词：激光光学 脉冲传输 光纤耦合 Kagome型反谐振空芯光纤 

分 类 号：TN248[电子电信—物理电子学] TN253