摘要
采用连续激光二极管端面抽运的全固态激光器结构,实验研究了新型电光晶体磷酸钛氧铷(RTP)作为Q开关时的电光调Q特性。在重复频率30 kHz,抽运功率24 W时,得到了最大平均输出功率6.7 W,相应脉冲宽度7.8 ns,峰值功率28.6 kW的稳定脉冲序列输出,脉冲能量不稳定度小于5%,斜率效率为34.9%。与同样条件下硅酸镓镧(LGS)电光Q开关的特性进行了比较,发现RTP电光Q开关输出指标优于LGS电光Q开关,并且RTP电光晶体的驱动电压明显低于LGS电光晶体,降低了系统功耗,具备作为三维扫描成像激光雷达发射光源的潜力。
The characteristics of RbTiOPO4（RTP） electro-optic（EO） Q-switch are experimentally studied in an all-solid-state laser which is end-pumped by a continuous-wave laser diode.Stable pulse train is generated at repetition rate of 30 kHz with pump power of 24 W.The maximum average output power is 6.7 W,and the pulse width is 7.8 ns with corresponding peak power of 28.6 kW.The pulse energy fluctuation is less than 5%,and the slope efficiency is 34.9%.It is found that the laser performance is better when using the RTP EO Q-switch in cavity than using La3Ga5SiO14（LGS） Q-switch.Furthermore,the driving voltage of RTP Q-switch is significantly lower than that of LGS.This high repetition rate,end-pumped all-solid-state laser with an RTP based EO Q-switch can be considered as a candidate for the three-dimensional（3D） imaging lidar transmitter.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2010年第3期617-621,共5页
Chinese Journal of Lasers
关键词
激光器
磷酸钛氧铷晶体
高重复率
电光调Q
lasers
RbTiOPO4 crystal
high repetition rate
electro-optic Q-switch
