摘要
提出了一种新型的基于非临界相位匹配KTA晶体的自级联光参量振荡（OPO）激光技术。采用LD端面泵浦Nd：YVO4晶体实现1.06μm振荡,腔内泵浦按非临界相位匹配角度切割的KTA晶体,将KTA晶体初次OPO产生的1.5μm信号光封闭在腔内用作二次OPO的泵浦光,实现基于单块KTA晶体自级联OPO的转化。在输出功率8W的808nm波长半导体激光泵浦下获得输出功率超过400mW、斜效率12.7%的2.6μm波长激光输出。结果表明基于单块KTA晶体的级联光参量振荡激光器可望成为获得脉冲2.5～2.7μm波段中红外激光的有效途径。
Cascaded OPO based on single non-critical phase matching KTA crystal was proposed. The fundamental oscillation at 1.06 μm was achieved by LD end-pumped Nd： YVO4 crystal laser, then the non-critical phase matching cut KTA crystal was intra cavity pumped. The 1.53 μm signal light produced by KTA-OPO was confined in the OPO cavity to realize the second OPO conversion in the same KTA crystal. Under 8 W incident diode pump power at 808 nm, a power exceeding 400 mW and slope efficiency of 12.7% at 2.6 μm were achieved based on cascaded OPO. Results show that the cascaded KTA-OPO is an efficient way to achieve 2.5-2.7 μm pulsed laser.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2016年第10期177-178,共2页
High Power Laser and Particle Beams
基金
国家自然科学基金项目(61505147)
浙江省公益技术应用研究项目(2015C35017)
温州市公益性科技计划项目(G20140057)
