光学学报, 2011, 31 (3): 0314002, 网络出版: 2011-02-28
10 kHz腔倒空锁模皮秒激光器研究
Research on Cavity-Dumping Mode-Locked Laser of Picosecond at 10 kHz
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 solid-state laser SESAM mode-locked laser cavity dumping technique picosecond pulse
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NdYVO4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6.5 μJ,脉冲宽度为10.4 ps。
Abstract
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 NdYVO4 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.
付洁, 庞庆生, 常亮, 艾庆康, 陈立元, 陈檬, 李港, 麻云凤, 樊仲维, 牛岗, 余锦, 刘洋, 张雪, 康文运, 贺凯. 10 kHz腔倒空锁模皮秒激光器研究[J]. 光学学报, 2011, 31(3): 0314002. Fu Jie, Pang Qingsheng, Chang Liang, Ai Qingkang, Chen Liyuan, Chen Meng, Li Gang, Ma Yunfeng, Fan Zhongwei, Niu Gang, Yu Jin, Liu Yang, Zhang Xue, Kang Wenyun, He Kai. Research on Cavity-Dumping Mode-Locked Laser of Picosecond at 10 kHz[J]. Acta Optica Sinica, 2011, 31(3): 0314002.