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人工晶体学报 ›› 2025, Vol. 54 ›› Issue (10): 1849-1857.DOI: 10.16553/j.cnki.issn1000-985x.2025.0172

• 研究论文 • 上一篇    下一篇

掺镱混晶的光谱增益带宽调控与激光性能研究

林可1, 张雅馨1(), 吴闻杰1, 李琳1, 林长浪2, 曾黄军2, 聂海宇2, 李志强2, 张戈2, 李真1,3,4, 张沛雄1,3,4(), 陈玮冬2, 陈振强1,3,4   

  1. 1.广东省晶体材料和晶体激光技术与应用工程技术研究中心,广州 510632
    2.中国科学院福建物质结构研究所功能晶体与器件全国重点实验室,福州 350002
    3.广东省光纤传感与通信技术重点实验室,广州 510630
    4.暨南大学物理与光电工程学院,广州 510632
  • 收稿日期:2025-08-01 出版日期:2025-10-20 发布日期:2025-11-11
  • 通信作者: 张沛雄,博士,教授。E-mail:pxzhang@jnu.edu.cn
  • 作者简介:张雅馨(2001—),女,湖北省人,硕士研究生。E-mail:zhangyaxin0106@163.com
    张沛雄,博士,暨南大学理工学院教授。《人工晶体学报》青年编委。广东省晶体材料和晶体激光技术与应用工程研究中心副主任。主要研究方向为体块光电功能晶体材料及激光技术,在新型稀土中红外氟化物激光晶体的生长和发光调控、超快激光晶体光谱展宽调控、稀土掺杂铌酸锂/钽酸锂多功能晶体及其器件、磁光晶体研制、新型全固态激光技术等方面开展原创性研究工作。目前已发表100多篇学术论文,获授权发明专利10多项。
    第一联系人:林可(2001—),男,广东省人,硕士研究生。E-mail:2235243302@qq.com
    (林 可、张雅馨并列第一作者)
  • 基金资助:
    国家自然科学基金(62375106);国家自然科学基金(51972149);国家自然科学基金(51872307);国家自然科学基金(51702124);广州市科技计划(2024A03J0240)

Spectroscopic Gain Bandwidth Modulation and Laser Performance of Ytterbium-Doped Mixed Crystals

LIN Ke1, ZHANG Yaxin1(), WU Wenjie1, LI Lin1, LIN Changlang2, ZENG Huangjun2, NIE Haiyu2, LI Zhiqiang2, ZHANG Ge2, LI Zhen1,3,4, ZHANG Peixiong1,3,4(), CHEN Weidong2, CHEN Zhenqiang1,3,4   

  1. 1. Guangdong Engineering Research Center for Crystal Materials and Crystal Laser Technology and Application,Guangzhou 510632,China
    2. State Key Laboratory of Functional Crystals and Devices,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China
    3. Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications,Guangzhou 510630,China
    4. School of Physics and Optoelectronic Engineering,Jinan University,Guangzhou 510632,China
  • Received:2025-08-01 Online:2025-10-20 Published:2025-11-11

摘要: 超短脉冲激光因在精密加工、生物医学等领域广泛的应用而备受关注,其发展高度依赖于具有宽带增益光谱的激光增益介质。相比激光玻璃,掺稀土离子的无序激光晶体兼具宽带增益光谱与优异的稳定性,是产生超短脉冲激光的理想增益介质。然而,混晶组分、晶体结构及其对发射带宽及中心配体对称性间的构效关系仍缺乏系统认知。本文对多个掺镱混晶体系,包括Yb∶Y2(Ca,Mg)3(SiO43、Yb∶Ca(Y,Gd)AlO4(Yb∶CALYGO)及Yb∶(Gd,Y)AlO3(Yb∶GYAP),开展了系统分析,揭示了混晶组分比例、结构无序度与Yb3+增益带宽之间的内在规律。在此理论指导下,成功生长了Yb∶CALYGO和Yb∶GYAP单晶,并分别实现了25和23 fs的超短脉冲激光输出。本研究为超快无序激光晶体的理性设计与其在超快激光应用中的性能优化提供了关键理论支撑和有效实现途径。

关键词: 超短脉冲激光; 第一性原理计算; 结构发光关系; Yb3+掺杂; 无序激光晶体

Abstract: Ultrashort lasers have attracted considerable attention due to their extensive applications in precision micromachining and biomedicine, and their development strongly relies on laser gain media with broad gain bandwidths. Compared with laser glass, rare-earth-ion-doped disordered crystals combine broad emission bandwidths with excellent thermal and mechanical stability, making them ideal candidates for generating ultrafast laser pulses. However, a systematic understanding of the mixed composition, crystal structure, and their structure-property relationships regarding emission bandwidth and central ligand symmetry remains lacking. In this work, several mixed crystal systems were systematically investigated, including Yb∶Y2(Ca,Mg)3(SiO43, Yb∶Ca(Y,Gd)AlO4(Yb∶CALYGO) and Yb∶(Gd,Y)AlO3(Yb∶GYAP), and reveal the intrinsic correlations between the mixed composition, structural disorder, and the spectral gain bandwidth of Yb3+. Guided by these theories, Yb∶CALYGO and Yb∶GYAP single crystals were successfully grown, enabling the generation of ultrafast pulses with durations of 25 and 23 fs, respectively. This work provides a theoretical foundation and an effective approach for the rational design and performance optimization of disordered crystals for ultrafast laser applications.

Key words: ultrashort pulse laser; first-principles calculation; structural luminescence relationship; Yb3+ doping; disordered laser crystal

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