高重复频率电光调Q双波长激光器  

Study on High Repetition Rate Electro-optical Q-switched Dual-wavelength Laser

作　　者：沈兆国[1] 付洁[1] 惠祥云[1] 程建新[1] 唐刚锋[1] 董涛[1] 羊毅[1] 

机构地区：[1]中航工业洛阳电光设备研究所,河南洛阳471009

出　　处：《光电子技术》2014年第1期53-56,共4页Optoelectronic Technology

摘　　要：高重复频率双波长激光器在远程激光测距、光电对抗、激光通信、激光雷达等领域具有重要的应用价值。为了获得高重复频率率双波长激光输出,首先通过高重复频率驱动电光调Q技术和LD侧面泵浦技术,获得高功率、高重复频率、窄脉冲宽度的线偏振1.06μm激光输出。再利用内腔差频方式,对周期极化晶体钽酸锂(PPLT)进行差频变换,获得1.46μm和3.9μm双波段激光输出。在激光器电源抽运电流25A、调制频率10kHz时,实现40 W的1.06μm激光输出,泵浦PPLT晶体获得最高功率为2.6W的3.9μm和4.2 W的1.46μm激光,差频转换效率为17%。试验结果表明:通过高重复频率电光调Q技术和LD侧面泵浦技术,可以实现高重复频率、窄脉冲宽度1.06μm光输出,泵浦PPLT可获3.9μm和1.46μm双波长激光输出。High repetition rate dual-wavelength laser has important applications in fields like long range laser measurement,photoelectric countermeasure,laser communication and LIDAR. To acquire high repetition rate dual-wavelength laser,electro-Optical Q-Switched by high repetition rate drive Q-switched technology and LD-side-pumped technology are required to attain high power,high repetition rate and narrow width of 1.06μm laser.Intracavity difference frequency technology with PPLT crystal was used to obtain 1.46μm and 3.9μm laser.When the input current is 25Aand the Q-switched frequency is 10kHz,the output power of 1.06μm laser is 40W. 2.6W3.9μm laser and 4.2W1.46μm laser were obtained.The optical-optical conversion efficiency of 1.06μm laser to 3.9μm and 1.46μm is 27.8%.The experiment results demonstrated that,high repetition rate electro-optical Q-Switched technology and LD-side-pumped technology can be used to obtain high repetition and narrow width 1.06μm laser and 3.9μm and 1.46μm dual-wavelength laser could be obtained by PPLT crystal.

关 键 词：电光调Q 光参量振荡器 双波长激光 

分 类 号：TN248[电子电信—物理电子学]