中国光学十大进展:900nm波段掺钕激光光纤(特邀)
China's Top 10 Optical Breakthroughs:Nd-Doped Laser Fibers of 900 nm Band(Invited)
陈应刚 1王亚飞 1董贺贺 1林治全 2郭梦婷 1王孟 1张磊 1于春雷 3王世凯 1胡丽丽3
作者信息
- 1. 中国科学院上海光学精密机械研究所先进激光与光电功能材料部特种玻璃与光纤研究中心,上海 201800;中国科学院大学,北京 100049
- 2. 成都信息工程大学光电工程学院,四川 成都 610225
- 3. 中国科学院上海光学精密机械研究所先进激光与光电功能材料部特种玻璃与光纤研究中心,上海 201800;中国科学院大学,北京 100049;国科大杭州高等研究院,浙江 杭州 310024
- 折叠
摘要
～900 nm激光可用于泵浦掺Yb3+激光材料和大气探测,其倍频产生的深蓝激光在水下通信、生物医学及激光加工等领域具有重大意义.由于良好的集成性、可调谐性及高光束质量等特性,基于掺钕石英光纤的～900 nm激光获得了越来越多的研究关注,但实现～900 nm光纤激光必须要克服～1060 nm 跃迁竞争.本文简要综述了～900 nm光纤激光中常用的～1060 nm寄生振荡抑制手段,着重介绍本课题组提出的I、S等阴离子共掺改变石英玻璃中Nd3+的配位环境,主动增强～900 nm发光的方案.利用该方案制备的掺钕石英玻璃～900 nm发射强度超过～1060 nm强度.采用自研引入I或S的掺钕石英光纤在全光纤化结构中实现了113.5 W的927 nm高功率激光、920 nm的高重复频率超短脉冲激光、890 nm及910 nm 单频激光、平均功率10 W级的920 nm皮秒脉冲激光,为～900 nm全光纤激光的应用奠定了增益材料基础.
Abstract
Lasers of～900 nm band can be used for pumping Yb3+-doped laser materials and atmospheric sensing.Moreover,the frequency doubling of ∼ 900 nm lasers leads to deep-blue lasers of～450 nm,which are crucial for underwater communication,biomedical applications,and laser processing.Because of their good integrability,tunability,and high beam quality,～900 nm lasers based on Nd3+-doped silica fibers have attracted increasing research attention.However,overcoming the competition from the～1060 nm transition of Nd3+is necessary to realize～900 nm fiber lasers.In this study,we review common techniques for suppressing the～1060 nm parasitic oscillation in～900 nm fiber lasers by focusing on an active enhancement scheme for～900 nm emission we proposed previously.Using this scheme,the obtained～900 nm emission intensity of Nd3+-doped silica fibers is higher than its～1060 nm intensity.A 113.5 W high-power laser output at 927 nm,high-frequency ultrashort pulsed laser at 920 nm,single-frequency lasers at 890 nm and 910 nm,and picosecond pulsed laser at 920 nm with an average power of 10 W class have been achieved in all-fiber structures using self-developed Nd3+-doped silica fibers.This result will lay the foundation for the application of an all-fiber laser at～900 nm.
关键词
Nd3+掺杂石英玻璃/～900nm激光/荧光分支比/光纤激光/配位环境Key words
Nd3+-doped silica glass/～900 nm laser/fluorescence branching ratio/fiber laser/local environment引用本文复制引用
出版年
2024
NETL
NSTL
万方数据