1 中国科学院上海光学精密机械研究所, 上海 201800
2 暨南大学理工学院光电工程系, 广州 510000
稀土离子掺杂氟化物晶体具有宽透光波段高透过率、低声子能量、长荧光寿命、负热光系数等优良特性, 可以产生从紫外到中红外波段激光, 是一类重要的激光增益介质。本文综述了本团队在稀土离子掺杂LiLuF4、LiYF4、BaY2F8、LaF3、PbF2、CeF3等氟化物晶体生长、光学和激光性能等方面的研究进展, 总结了稀土离子共掺敏化、退激活、能级耦合调控以及多离子发光等方面的研究工作, 展望了稀土离子掺杂氟化物激光晶体的研究发展趋势。
稀土离子 氟化物晶体 激光晶体 晶体生长 光学性能 激光性能 rare-earth ion fluoride crystal laser crystal crystal growth optical property laser property 人工晶体学报
2022, 51(9-10): 1573
中国科学院上海光学精密机械研究所, 中国科学院强激光材料重点实验室, 上海 201800
钛宝石 (Ti:Al2O3) 激光晶体具有高硬度、高热导、宽带吸收、宽带发射等性能特点, 广泛应用于可调谐、高功率和超快激光领域。近年来, 钛宝石晶体的生长技术、基础理论分析和器件化应用都得到了极大的发展, 对其进行的研究也越来越深入、广泛。综述了钛宝石晶体材料研究和应用的主要进展。
材料 钛宝石晶体 性能 晶体生长方法 残余红外吸收 器件应用 material titanium doped sapphire crystal characteristics crystal growth method residual infrared absorption device application
Author Affiliations
Abstract
1 State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan 250100, China
2 Key Laboratory of High Power Laser Materials, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
3 College of Physics and State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
Praseodymium-ion-doped gain materials have the superiority of lasing at various visible wavelengths directly. Simple and compact visible lasers are booming with the development of blue laser diodes in recent years. In this Letter, we demonstrate the watt-level red laser with a single blue laser diode and Pr:YLiF4 crystal. On this basis, the passively Q-switched pulse lasers are obtained with monolayer graphene and Co:ZnO thin film as the Q-switchers in the visible range.
140.3480 Lasers, diode-pumped 140.3540 Lasers, Q-switched 140.7300 Visible lasers Chinese Optics Letters
2019, 17(7): 071402
Author Affiliations
Abstract
1 State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
2 Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
3 University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, China
A Ti:sapphire crystal with a diameter of 235 mm and thickness of 72 mm was grown by the heat exchange method (HEM). The absorption intensity of the crystal at 532 nm averaged at 91%. The figures of merit (FOMs) at different positions of the crystal were measured and the FOM value in the central region was found to reach 90. The transmittance laser beam was intact with no obvious distortions and had only a small deformation compared with the incident laser beam. A small-signal amplification experiment was performed on the Ti:sapphire crystal and a gain of more than 6 times was achieved with a pump energy density of 1.98 J/cm2. These tests indicate that the 235 mm Ti:sapphire crystal has excellent optical qualities and will further improve the energy output of a 10 PW laser system.
140.3280 Laser amplifiers 140.3590 Lasers, titanium 140.5560 Pumping Chinese Optics Letters
2018, 16(7): 071401
中国科学院上海光学精密机械研究所, 上海 201800
《高性能激光晶体制造工艺与装备》国家重点研发计划项目（项目编号:2016YFB1102300）面向激光制造重大需求，以工业化皮秒/飞秒激光器为牵引，立足于发展高热导、宽带高增益、低声子能量的新型倍半氧化物激光晶体，突破极高熔点激光晶体制造、加工的系列工艺和装备中关键技术难题，以打通倍半氧化物激光晶体（见图1）从高性能体系设计、生长、样机应用及批量化制造的全链条为目标，提供满足高可靠、长寿命激光器所需的核心材料与元器件。
激光与光电子学进展
2017, 54(1): 013601
1 陕西学前师范学院物理与电子技术系, 陕西西安710100
2 中国科学院上海光学精密机械研究所强激光材料重点实验室, 上海201800
3 中山大学物理科学与工程技术学院, 广东广州510275
采用中频感应提拉法生长了高光学质量的YAP:Cu(原子数分数为0.5%)单晶，使用RisFTL/OSL-DA-15型热释光(TL)和光释光(OSL)仪系统研究了其TL 性能。研究结果表明：YAP:Cu单晶存在431K和482K两个热释光峰，482K处为主发光峰；TL峰位置不随辐照剂量的变化而变化,显示其为一级动力学峰；YAP:Cu单晶的TL 辐射剂量响应在10-5-102Gy范围内呈较好的线性关系。YAP:Cu晶体是一种TL性能优良并具有潜在应用价值的电离辐射剂量计材料。
材料 YAP:Cu单晶 热释光 剂量响应 剂量计 激光与光电子学进展
2014, 51(9): 091605
1 中国科学院上海光学精密机械研究所,强激光材料重点实验室, 上海 201800
2 中国科学院上海光学精密机械研究所,强场激光物理国家重点实验室, 上海 201800
阐述了温梯法生长大口径、高质量的掺钛蓝宝石晶体。生长的钛宝石在300～900 nm波段具有较好的光学吸收特性，通过测定晶体横截面不同位置处的吸收系数来表征掺杂浓度的均匀性。测定钛宝石在200～1100 nm波段的透射率，计算品质因素(FOM)值在240以上。钛宝石晶体的静态和单发放大的光斑质量较高、无畸变，其抽运激光的放大输出能量达到国际相同规格钛宝石的同等水平。
激光晶体 钛宝石 温梯法 吸收特性 品质因素 激光性能
