1 深圳大学信息工程学院, 广东 深圳 518060
2 深圳大学物理与光电工程学院深圳市激光工程重点实验室, 广东 深圳 518060
3 深圳技术大学, 广东 深圳 518118
4 山东大学晶体材料国家重点实验室和晶体材料研究所, 山东 济宁 250100
5 深圳市大族激光科技股份有限公司, 广东 深圳 518057
首次搭建了基于ZnWO4/Nd∶YAG的一阶斯托克斯拉曼激光器,并研究了其在不同重复频率与不同输出耦合镜下的输出特性。采用ZnWO4晶体作为拉曼晶体,二极管泵浦Nd∶YAG晶体产生基频光,实现了波长为1177.6 nm的一阶斯托克斯激光输出。当输出耦合镜的透过率为35%,泵浦功率为22.1 W,重复频率9 kHz时,在1177.6 nm处获得了最大平均输出功率,为886 mW,对应的最短脉宽为2.2 ns,峰值功率为43.9 kW。
激光器 固体激光器 拉曼 ZnWO4晶体
1 深圳大学电子与信息工程学院, 广东 深圳 518060
2 深圳大学深圳市激光工程重点实验室, 广东 深圳 518060
3 山东大学晶体材料国家重点实验室, 山东 济南 250100
4 深圳技术大学, 广东 深圳 518118
5 大族激光科技股份有限公司, 广东 深圳 518057
为研究ZnWO4晶体的二阶拉曼性质,搭建了基于ZnWO4晶体的二阶拉曼激光器,实现了重复频率为9 kHz的670 mW的1318.3 nm的二阶斯托克斯激光输出,对应的脉宽为3.294 ns,光光转换率为4.7%,峰值功率达到22.6 kW。实验结果表明,ZnWO4晶体具有良好的性能,能够实现二阶拉曼激光输出。
固体激光器 拉曼激光器 ZnWO4晶体
深圳大学光电工程学院, 深圳市激光工程重点实验室, 先进光学精密制造技术广东普通高校重点实验室, 广东 深圳 518060
报道了一种采用ZnWO4单晶作为拉曼晶体的2294 nm拉曼激光器。使用激光二极管端面抽运Tm∶YLF晶体产生1899 nm的基频光,采用内腔抽运ZnWO4晶体,得到了2294 nm的一阶斯托克斯激光输出,最大功率为173 mW,最短脉宽为2.280 ns,最高峰值功率为25.292 kW,从实验上证实了ZnWO4作为红外拉曼晶体的可行性。
激光器 固体激光器 拉曼激光器 ZnWO4晶体 中国激光
2018, 45(12): 1201001
Author Affiliations
Abstract
1 Shenzhen Key Laboratory of Laser Engineering, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
2 Sino-German College for Intelligent Manufacturing, Shenzhen Technology University, Shenzhen 518060, China
3 Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen 518060, China
4 Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China
Supercontinuum generation (SC) of more than one octave spectrum spanning covering from 400 nm to 820 nm was achieved by pumping a piece of aluminum nitride (AIN) single crystal using a nanosecond 355 nm ultraviolet laser. The AlN with a thickness of ～0.8 mm was grown by an optimized physical vapor transport technique and polished with solidification technology. Compared to previously reported ones, the achieved visible SC exhibited the broadest spectrum spanning from bulk materials pumped by a nanosecond pulse laser. The visible supercontinuum in AlN presents new opportunities for bulk material-based white light SC and may find more potential applications beyond typical applications in integrated semiconductive photoelectronic devices.
320.6629 Supercontinuum generation 190.2640 Stimulated scattering, modulation,etc. 190.4720 Optical nonlinearities of condensed matter Chinese Optics Letters
2018, 16(4): 043201
Dongdong Wang 1,2,3Chenlin Du 1,2,3,*Xikui Ren 1,2,3Chunbo Li 1,2,3Shuangchen Ruan 1,2,3
Author Affiliations
Abstract
1 College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
2 Shenzhen Key Laboratory of Laser Engineering, Shenzhen 518060, China
3 Key Laboratory of Advanced Optical Precision Manufacturing Technology of Guangdong Higher Education Institutes, Shenzhen University, Shenzhen 518060, China
We report a Q-switched self-Raman third-Stokes laser at a wavelength of 1487 nm, with a YVO4/Nd:YVO4/YVO4 composite crystal and a high-power fiber-coupled diode laser array at 808 nm. The maximal average output power at 1487 nm is measured to be 506 mW, at an incident pump power of 34 W and a pulse repetition frequency (PRF) of 30 kHz. The corresponding optical conversion efficiency is 1.49%. To our knowledge, our Q-switched self-Raman third-Stokes laser at 1487 nm on a YVO4/Nd:YVO4/YVO4 composite crystal is reported for the first time.
Chinese Optics Letters
2015, 13(Suppl): S21403
