北京工业大学材料与制造学部超短脉冲激光及应用研究所, 北京 100124
建立了3.5 μm双波长泵浦(DWP)Er∶ZBLAN光纤激光器的理论模型,并首次引入基于弛豫-打靶组合方法(RSM)求解3.5-μm-DWP-Er∶ZBLAN光纤激光器边值问题的稳态分析算法,同时分析了标准弛豫算法在此种情况下的各项计算特性,对两种方法进行了详细对比。研究结果表明,在3.5-μm-DWP-Er∶ZBLAN理论模型下,所提算法相比标准的弛豫法有着明显优势。一方面对猜测值具有低敏感性,无需在仿真前对猜测值进行高精度的估值;另一方面在高输出精度下,算法收敛速度可达标准弛豫法的10倍以上,有效提升了仿真的计算速度和准确度。所提算法对3.5-μm-DWP-Er∶ZBLAN光纤激光器的理论特性研究有着较大的实用价值。
中国激光
2021, 48(11): 1101004
1 山东师范大学物理与电子科学学院, 山东 济南 250014
2 山东省光学与光子器件技术重点实验室, 山东 济南 250014
3 中国科学院上海硅酸盐研究所, 上海 201899
Nd,Gd∶CaF2是一种无序结构晶体,具有光谱宽、热导率高、透射范围大、声子能量低等优势。利用0.5%Nd,8%Gd∶CaF2晶体作为激光增益介质(百分数为原子数分数),实现了LD抽运的调谐激光输出,激光调谐波长范围为1045.7~1074.2 nm;将半导体可饱和吸收镜作为锁模元件,最终实现了双波长锁模激光输出,锁模激光器的中心波长分别位于1065.45 nm和1066.48 nm。锁模激光器的最大平均输出功率约为394 mW,最小脉冲宽度约为8.37 ps。
激光器 无序结构晶体 调谐激光 双波长 锁模激光器 二极管抽运激光器
Author Affiliations
Abstract
1 Shandong Provincial Key Laboratory of Optics and Photonic Device, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
2 Institute of Data Science and Technology, Shandong Normal University, Jinan 250014, China
3 Synthetic Single Crystal Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, China
4 Key Laboratory of Transparent and Opto-functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, China
Using a novel silver nanorods absorber with a localized surface plasmon resonance absorption peak at 1.06 μm, we obtain a diode-pumped passively Q-switched (PQS) Nd,Gd:CaF2 disordered crystal laser output. Its PQS pulse laser performances are studied comprehensively and systematically in this Letter. The single pulse energy and peak power can be attained to 2.15 μJ and 2.06 W, respectively.
140.0140 Lasers and laser optics 140.3380 Laser materials 140.3480 Lasers, diode-pumped 140.3540 Lasers, Q-switched Chinese Optics Letters
2018, 16(2): 020015
Author Affiliations
Abstract
1 Shandong Provincial Key Laboratory of Optics and Photonic Device, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
2 Institute of Data Science and Technology, Shandong Normal University, Jinan 250014, China
3 School of Physics and Information Technology, Shaanxi Normal University, Xi’an 710119, China
A diode-pumped Tm:YLF passively Q-switched laser at 2 μm was first demonstrated by using graphene oxide (GO) as a saturable absorber (SA). In this letter, continuous-wave (CW) laser and pulse laser performances were studied meticulously and systematically. It reasonably showed the dependence of the pulse duration, pulse energy, and pulse repetition rate on the absorbed power. A maximum repetition rate of 38.33 kHz and a single pulse energy of 9.89 μJ were obtained.
140.3380 Laser materials 140.3480 Lasers, diode-pumped 140.3540 Lasers, Q-switched Chinese Optics Letters
2018, 16(2): 020013
