基于微纳光纤脉冲压缩器的皮秒脉冲掺镱光纤激光器  

Picosecond pulse Yb-doped fiber laser based on pulse compressor of microfiber

作　　者：喻佳澜 刘萌[1,2] 李相越 汪徐德[3] 罗爱平[1,2] 徐文成[1,2] 罗智超[1,2] Yu Jialan;Liu Meng;Li Xiangyue;Wang Xude;Luo Aiping;Xu Wencheng;Luo Zhichao(Guangzhou Key Laboratory for Special Fiber Photonic Devices and Applications,South China Normal University,Guangzhou 510006,China;Guangdong Provincial Engineering Technology Research Center for Microstructured Functional Fibers and Devices,South China Normal University,Guangzhou 510006,China;School of Physics and Electronic Information,Huaibei Normal University,Huaibei 235000,China)

机构地区：[1]华南师范大学广州市特种光纤光子器件重点实验室,广东广州510006 [2]华南师范大学广东省微结构功能光纤与器件工程技术研究中心,广东广州510006 [3]淮北师范大学物理与电子信息学院,安徽淮北235000

出　　处：《红外与激光工程》2018年第8期42-46,共5页Infrared and Laser Engineering

基　　金：国家自然科学基金(11474108;11304101;61307058;61378036;11504121);广东省自然科学基金杰出青年基金(2014A030306019);广东省科技创新青年拔尖人才(2014TQ01X220);广东省高等学校优秀青年教师培养计划培养(YQ2015051);广东省科技项目(2016B090925004);广东省光电子器件与系统(GD201602);广东高校青年创新人才项目(2017KQNCX051);广州市科技计划项目(201607010245);安徽省高校自然科学研究重点项目(KJ2017A381);华南师范大学青年教师科研培育基金(17KJ09)

摘　　要：1.0μm波段的超短脉冲激光器在激光加工、光学精密测量和生物医学等领域具有重要应用价值,但由于掺镱光纤激光器工作在全正色散区域,激光器直接输出的脉冲通常宽度较大。文中利用改变微纳光纤尺寸可以使其在1.0μm波段提供反常色散的特点,将微纳光纤作为色散补偿元件在掺镱光纤激光器腔外对脉冲进行压缩来获得超短脉冲。实验中,自主拉制的微纳光纤锥腰直径为3μm,锥腰长度为5 cm。掺镱光纤激光器直接输出脉冲宽度为37.6 ps,经微纳光纤压缩后脉冲宽度为8.5 ps。该结果提供了一种更简便低廉的压缩脉冲方法。Ultra-short pulse lasers at 1.0 μm waveband have important applications in many fields such as laser processing, optical precision measurement, biomedicine etc. However, because the Yb-doped fiber laser operates in the all-normal dispersion regime, the pulse width of the laser output is usually large. Because the microfiber could provide anomalous dispersion at 1.0 μm waveband by changing its size, in order to achieve ultra-short pulse the microfiber was employed as dispersion compensation device to compress the Yb-doped fiber laser pulse. In this work, the diameter and length of taper waist of the home-made microfiber were 3 μm and 5 cm, respectively. The pulse width of the Yb-doped fiber laser was 37.6 ps, while it was compressed to be 8.5 ps by the microfiber. These results offer a more simple and inexpensive method for pulse compression.

关 键 词：微纳光纤 掺镱光纤激光器 脉冲压缩 

分 类 号：TN248[电子电信—物理电子学]