Pr^(3+)离子激活的可见光激光晶体研究进展  

Research Progress of Pr^(3+)Activated Laser Crystals in Visible Region

作　　者：许崇磊 马凤凯 张振 姜大朋[1] 张中晗 寇华敏[1] 陈振强[2] 苏良碧[1] 徐军[3] XU Chong-lei;MA Feng-kai;ZHANG Zhen;JIANG Da-peng;ZHANG Zhong-han;KOU Hua-min;CHEN Zhen-qiang;SU Liang-bi;XU Jun(State Key Laboratory of High-performance Ceramics and Superfine Microstructure,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 201899,China;Department of Optoelectronic Engineering,College of Science&Engineering,Jinan University,Guangzhou 510632,China;School of Physics Science and Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]中国科学院上海硅酸盐研究所高性能陶瓷和超微结构国家重点实验室,上海201899 [2]暨南大学理工学院光电工程系,广东广州510632 [3]同济大学物理科学与工程学院,上海200092

出　　处：《发光学报》2022年第11期1690-1704,共15页Chinese Journal of Luminescence

基　　金：国家自然科学基金(61925508,61905289);上海市“科技创新行动计划”(20511107400);中国科学院创新交叉团队项目(JCTD-2019-12)资助。

摘　　要：可见波段激光因其在激光显示、光通讯、生物医疗、工业加工等领域的特殊应用而备受关注。近年来,Pr^(3+)掺杂晶体作为一类重要的可见波段激光增益介质,已经在蓝光、绿光、橙光、红光波段实现了良好的激光输出,并已在氟化物中实现瓦级连续(CW)激光输出。本文系统总结了掺Pr^(3+)氟化物和氧化物激光晶体在可见波段的光谱特性和激光输出现状,深入分析了激发态吸收、多声子弛豫、交叉弛豫过程对Pr^(3+)可见激光输出的影响及其机制,旨在为新型可见光激光增益介质材料的筛选提供建议和指导。最后,总结了目前掺Pr^(3+)可见激光晶体材料中仍存在的问题,并对后续的研究方向进行了展望。Laser emission in visible spectral regions has attracted much attention due to a wide variety of domains such as material processing in industry,fluorescence microscopy in research science,wireless optical communication,holography,laser display.Recently,Pr^(3+)activated fluoride laser crystals have achieved watt-level continuous output in various visible spectral ranges for instance,cyan(^(3)P_(0)→^(3)H_(4)),green(^(3)P_(1)→^(3)H_(5)),orange(^(3)P_(0)→^(3)H_(6)),red(^(3)P_(0)→^(3)F_(2))as well as deep red(^(3)P_(0)→^(3)F_(3,4)).In this paper,various fluoride and oxide host crystals doped with Pr^(3+)are used as the research objects,and the spectral characteristics and laser output status of the current Pr^(3+)-activated laser crystals are systematically summarized.The effect of ESA(Excited state absorption),MPR(Multi-phonon relaxation),CR(Cross-relaxation)process on Pr^(3+)laser output is expected to further provide valuable guidance and suggestions for the selection of laser gain medium.Finally,the existing problems in Pr^(3+)-doped laser crystal materials are pointed out,and the follow-up research direction is prospected.

关 键 词：可见光激光晶体 Pr^(3+)掺杂 激发态吸收 交叉弛豫 多声子弛豫 

分 类 号：O482.31[理学—固体物理]