10kHz腔倒空锁模皮秒激光器研究  

Research on Cavity-Dumping Mode-Locked Laser of Picosecond at 10 kHz

作　　者：付洁[1] 庞庆生[1] 常亮[1] 艾庆康[1] 陈立元[1] 陈檬[1] 李港[1] 麻云凤[2] 樊仲维[3,2] 牛岗[3] 余锦[2] 刘洋[2] 张雪[2] 康文运[4] 贺凯[4] 

机构地区：[1]北京工业大学激光工程研究院,北京100124 [2]中国科学院光电研究院,北京100080 [3]北京国科世纪激光技术有限公司,北京100085 [4]北京跟踪与通信技术研究所,北京100094

出　　处：《光学学报》2011年第3期150-154,共5页Acta Optica Sinica

基　　金：国家863计划(2008AA031901)资助课题

摘　　要：将半导体可饱和吸收体(SESAM)锁模技术与腔倒空技术结合,采用半导体端面抽运方式实现了具有高重复频率、大单脉冲能量的皮秒激光器的运转。从理论上分析了腔倒空锁模输出的机理,建立起腔倒空锁模激光器运行的物理图像,并对影响激光器倒空率的一些因素进行了研究。实验上,实现端面抽运Nd∶YVO4晶体的SESAM连续锁模后,在锁模腔内插入BBO电光调制晶体,获得10 kHz腔倒空皮秒锁模脉冲输出。当抽运光功率为14.1 W时,输出锁模脉冲的单脉冲能量为6.5μJ,脉冲宽度为10.4 ps。Mode locked and cavity dumping techniques are comtined to get picosecond pulse with high energy at high repetition rate.The mechanism and physical image of cavity-dumping mode-locked laser are analyzed and factors which affect the dumping efficiency of cavity-dumping laser are studied.Cavity-dumping mode-locked laser at repetition rate of 10 kHz can be realized with the help of Nd∶YVO4 SESAM mode-locking and a BBO modulator placed in cavity.When pump power is 14.1 W,pulses with energy of 6.5 μJ are obtained,and the pulse width is about 10.4 ps.This kind of laser will have good prospects for development because high energy pulses can be obtained directly from mode-locked oscillator.

关 键 词：固体激光器 半导体可饱和吸收体锁模激光器 腔倒空技术 皮秒脉冲 

分 类 号：TN248.1[电子电信—物理电子学]