中国光学十大进展:900 nm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)

作　　者：陈应刚 王亚飞 董贺贺 林治全 郭梦婷 王孟[1,2] 张磊 于春雷[1,2,4] 王世凯 胡丽丽[1,2,4] Chen Yinggang;Wang Yafei;Dong Hehe;Lin Zhiquan;Guo Mengting;Wang Meng;Zhang Lei;Yu Chunlei;Wang Shikai;Hu Lili(Advanced Laser and Optoelectronic Functional Materials Department,Special Glasses and Fibers Research Center,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;University of Chinese Academy of Sciences,Beijing 100049,China;College of Optoelectronic Engineering,Chengdu University of Information Technology,Chengdu 610225,Sichuan,China;Hangzhou Institute for Advanced Study,University of Chinese Academy of Sciences,Hangzhou 310024,Zhejiang,China)

机构地区：[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 [2]中国科学院大学,北京100049 [3]成都信息工程大学光电工程学院,四川成都610225 [4]国科大杭州高等研究院,浙江杭州310024

出　　处：《激光与光电子学进展》2024年第23期1-14,共14页Laser & Optoelectronics Progress

基　　金：中国科学院青年促进会(2020250);国家自然科学基金(62205356);四川省自然科学基金(2024NSFSC1442)。

摘　　要：900 nm激光可用于泵浦掺Yb^(3+)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Nd^(3+)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。Lasers of~900 nm band can be used for pumping Yb^(3+)-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 Nd^(3+)-doped silica fibers have attracted increasing research attention.However,overcoming the competition from the~1060 nm transition of Nd^(3+)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 Nd^(3+)-doped silica fibers is higher than its~1060 nm intensity.A 113.5 W high-power laser output at 927 nm,highfrequency 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 Nd^(3+)-doped silica fibers.This result will lay the foundation for the application of an all-fiber laser at~900 nm.

关 键 词：Nd^(3+)掺杂石英玻璃 ~900 nm激光 荧光分支比 光纤激光 配位环境 

分 类 号：TN244[电子电信—物理电子学]