Author Affiliations
Abstract
1 Shandong Provincial Engineering and Technical Center of Light Manipulations & Shandong Provincial Key Laboratory of Optics and Photonic Device, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China
2 CAS Key Laboratory of Transparent and Opto-functional Inorganic Materials, Synthetic Single Crystal Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China
3 State Ley Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China
We report on laser diode (LD) pumped passively Q-switched Yb,Gd:SrF2 lasers with high single-pulse energy for the first time, to the best of our knowledge. In addition, a stable Q-switched laser based on a Cr4+:Y3Al5O12 saturable absorber was demonstrated. The maximum output power of the Q-switched laser obtained was 495 mW, with a pulse width and a pulse repetition rate of 233 ns and 1.238 kHz, respectively. The corresponding single-pulse energy and the peak power were as high as 400 μJ and 1.714 kW. The laser was operated under a transverse electromagnetic mode, and the beam quality was near-diffraction-limited.
diode pumping solid-state lasers passive Q-switching Chinese Optics Letters
2020, 18(10): 101401
1 山东师范大学物理与电子科学学院, 山东 济南 250014
2 中国科学院上海硅酸盐研究所透明光功能无机材料重点实验室, 上海 201800
利用激光二极管抽运掺镱硅酸镥( YbLu2SiO5 , Yb:LSO)晶体, 在腔内不加任何主被动调制器、且腔内未插入硬光阑的情况下, 实现了激光器的克尔透镜自锁模运转。采用4镜Z形折叠腔, 在抽运功率为15.8 W时, 得到平均功率达2.05 W的克尔透镜自锁模稳定脉冲输出,相应的斜率效率为16.5%。
激光技术 激光二极管抽运 Yb:LSO晶体 自锁模
1 山东师范大学物理与电子科学学院, 山东 济南 250014
2 山东大学晶体材料研究所, 山东 济南 250100
报道了激光二极管(LD)侧面抽运Nd:YAG晶体间歇振荡1064 nm和1319 nm双波长激光器。采用间歇振荡技术,可有效地控制上能级的反转粒子数,避免激光振荡谱线之间的双波长竞争效应,而且对输出镜镀膜精度的要求大大降低,稳定的间歇振荡双波长激光输出较容易获得。两声光间的延迟时间连续可调,因此可以通过调节延迟时间来改变双波长激光的输出功率之比。在抽运电流为22 A,声光重复频率为4 kHz,延迟时间为10 μs时获得1319 nm激光偏振输出功率6.2 W,1064 nm激光偏振输出功率5.1 W。根据间歇振荡双波长激光器的四能级速率方程模型进行了数值计算和分析,理论结果与实验相符。
激光器 双波长 间歇振荡 激光二极管侧面抽运 Nd:YAG晶体
Author Affiliations
Abstract
1 College of Physics and Electronics, Shandong Normal University, Ji'nan 250014
2 National Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Ji'nan 250100
We demonstrate an efficient and eye-safe wavelength intracavity optical parametric oscillator (OPO), based on a KTP crystal inside a Q-switched Nd:YVO4 laser end pumped by a fiber-coupled diode laser. In the acousto-optic Q-switched operation with the pulse repetition rate of 10 kHz, a 1572-nm eye-safe laser with the average power of 237 mW at the incident pump power of 5.64 W is obtained. Under the pulse repetition rate of 5 kHz, the signal light with pulse width of 2 ns and peak power of 18.5 kW is achieved. The conversion efficiency of the average power is 4.2% from pump diode to OPO signal output and the signal pulse duration is about 13 times shorter than that of the depleted pump light.
LD抽运 全固态激光器 光学参量振荡 频率转换 140.3480 Lasers, diode-pumped 140.3580 Lasers, solid-state 190.4410 Nonlinear optics, parametric processes 190.2620 Frequency conversion Chinese Optics Letters
2006, 4(11): 646
Author Affiliations
Abstract
College of Physics and Electronics, Shandong Normal University, Ji'nan 250014
A diode-pumped passively Q-switched Nd:YLF laser was demonstrated by using saturable absorber of Cr4+:YAG. At the incident power of 7.74 W, pure passively Q-switched laser with per pulse energy of 210 'mu'J and pulse width of 19.6 ns at repetition rate of 1.78 kHz was obtained by using Cr4+:YAG with initial transmission of 80%. At the incident power of 8.70 W, a Q-switched mode-locking with average output power of 650 mW was achieved, the overall slope efficiency was 16%, corresponding to the initial transmission of 85% of Cr4+:YAG.
140.3530 Lasers, neodymium 140.3480 Lasers, diode-pumped 140.3540 Lasers, Q-switched 140.3580 Lasers, solid-state 140.4050 Mode-locked lasers Chinese Optics Letters
2006, 4(7): 407
