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 暨南大学理工学院光电工程系, 广州 510000
3 中国科学院大学, 材料与光电研究中心, 北京 100049
4 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 2018003
中红外激光晶体材料作为激光技术核心增益材料之一, 在**光电对抗、激光医疗、卫星遥感、环境监测、基础科学等领域具有非常重要的应用。本文介绍了近年来在中红外氟化物激光晶体材料中, 关于晶体生长、光学性能优化以及中红外激光性能等方面的研究工作, 特别是在中红外光学性能优化调控方面, 主要介绍基于稀土能级耦合的相互作用, 有效抑制发光离子的自终止效应, 以及为发光离子提供有效泵浦通道。
中红外氟化物激光晶体 晶体生长 光学性能优化 中红外激光性能 mid-infrared fluoride laser crystal crystal growth optical performance optimization mid-infrared laser performance
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
Research Center of Space Laser Information Technology, Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
A compact all-solid-state continuous-wave (CW) laser at 1047 nm is developed based on Nd:LuLF, which is grown through the Czochralski technique. From the laser system, 1.3-W laser can be obtained, which corresponds to the slope efficiencies of 20.1% and 49.5% with respect to the incident and absorbed pump powers, respectively. To the best of our knowledge, this is the highest power level achieved at 1047 nm based on the Nd:LuLF crystal.
1047 nm Nd:LuLF 140.3390 Laser materials processing 140.3590 Lasers, titanium 160.3900 Metals Chinese Optics Letters
2011, 9(2): 021404
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 中国科学院研究生院， 北京 100049
3 上海交通大学物理系， 上海 200240
选择中频电磁感应加热提拉法生长出了透明、基本无散射和气泡、无包裹物的高质量的铥(Tm)取代钇（Y）的原子数分数为2%的Tm:YLiF4（YLF），并采用X射线衍射（XRD）法对晶体进行了物相分析。测试TmYLF晶体的吸收光谱并计算了Tm离子对不同波长的吸收系数和吸收截面。同时测定其荧光光谱并分析了3H4－3F4和3F4－3H6跃迁产生的发射峰。对TmYLF晶体进行了激光实验，当输入功率为160 W时，获得了54.4 W的激光输出，斜率效率为35.6%，最大光光转换效率为31.2％。
材料 2 μm激光晶体 提拉法 激光输出
Author Affiliations
Abstract
1 Key Laboratory of Material Science and Technology for High Power Lasers, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
2 Graduate School of Chinese Academy of Sciences, Beijing 100049, China
3 Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
LiLuF4 single crystals co-doped with thulium (5%) and holmium (0.5%), having large size, intact shape, and high optical quality, are successfully grown by the Czochralski technique. Absorption and fluorescence spectra of the crystal are measured. The absorption spectrum shows that the main absorption band locates at near 686 and 792 nm and the °uorescence spectrum peaks at 2.05 \mu m. At room temperature, the as-grown Tm, Ho: LiLuF4 single crystals are end-pumped by a fiber-coupled laser diode system with pumping wavelength of 795 nm under CW operations. A power of 50 mw continuous laser output at 2.05 \mu m wavelength is achieved. Meanwhile an obvious green light is detected.
Tm Ho:LuLF晶体 2μm激光 提拉法 上转换 160.3380 Laser materials 160.5690 Rare-earth-doped materials 160.4760 Optical properties 140.3380 Laser materials Chinese Optics Letters
2010, 8(1): 63
