基于啁啾脉冲放大技术的2W光纤绿光飞秒激光器  

2W Femtosecond Green Fiber Laser Based on Chirped Pulse Amplification Technology

作　　者：戚亦乐 尚俊杰 朱方顺 潘科 郑建奎 陈炯[1] 崔索超[1] 吴新建[1] QI Yi-le;SHANG Jun-jie;ZHU fang-shun;PAN Ke;ZHENG Jian-kui;CHEN Jiong;CUI Suo-chao;WU Xin-jian(Huazhong Institute of Electro-Optics—Wuhan National Laboratory for Optoelectronics,Wuhan 430223,China)

机构地区：[1]华中光电技术研究所—武汉光电国家研究中心,湖北武汉430223

出　　处：《光学与光电技术》2023年第1期89-93,共5页Optics & Optoelectronic Technology

摘　　要：绿光波段的飞秒激光一般使用钛蓝宝石飞秒激光器通过倍频产生,但是钛蓝宝石激光器价格高昂,且其固体体制稳定性较差,限制了飞秒绿光激光器的使用范围。采用基于SESAM被动锁模的光纤飞秒种子源和啁啾脉冲放大(Chirped Pulse Amplification,CPA)技术产生1030 nm的基频光,经过压缩倍频后,实现了脉宽357 fs、平均功率2.187 W的515 nm飞秒激光输出。该飞秒激光器具备基频光与倍频光双波长切换输出的能力,且具有体积紧凑、脉冲稳定、转换效率较高、光束质量良好的优势,可作为超快激光加工系统的光源。Femtosecond laser in green band is usually generated by frequency doubling of Ti:sapphire femtosecond laser.However,the high cost of Ti:sapphire laser and poor stability of its solid system limit the application of femtosecond green laser.In this paper,the femtosecond seed source based on SESAM passive mode-locking and chirp(CPA)technology are used to generate 1030 nm fundamental frequency light.After compression and frequency doubling,the 515 nm femtosecond laser with pulse width<400 fs and average power>2 W is achieved.The femtosecond laser has the ability to switch the output of fundamental frequency light and frequency doubling light,and has the advantages of compact size,stable pulse,high conversion efficiency and good beam quality.It can be used as the light source of ultrafast laser processing system.

关 键 词：被动锁模 飞秒激光 绿光 啁啾脉冲放大 倍频 

分 类 号：TP248.1[自动化与计算机技术—检测技术与自动化装置]