应用激光, 2013, 33 (2): 204, 网络出版: 2013-05-22
工业加工用高重频腔倒空锁模皮秒激光器研究
Research on Industrial Processing Used High Repetition Rate Cavity-Dumping Mode-Locked Picosecond Laser
激光技术 固体激光器 半导体可饱和吸收体锁模 腔倒空技术 皮秒脉冲 laser technique solid-sate laser SESAM mode-locked laser cavity dumping technique picosecond pulse
摘要
报道了一台用于工业加工的半导体激光端面泵浦Nd∶YVO4晶体的固体皮秒脉冲激光器。实验采用半导体可饱和吸收体(SESAM)锁模技术, 并首次利用普克尔盒双向加压方式进行腔倒空, 精确控制电光晶体的加压脉宽, 实现了高重频皮秒激光的运转, 得到了重复频率从500 kHz到1 MHz可调的激光输出。当重复频率为1 MHz时, 获得了中心波长为1 064 nm、脉冲宽度10.4 ps、单脉冲能量为297 nJ的激光输出。该皮秒激光系统结构紧凑、稳定性高, 为工业加工及再生放大提供了良好的光源。
Abstract
An industrial processing used fiber end-pumped Nd∶YVO4 solid-state picosecond laser was demonstrated. Semiconductor saturable absorption mirror (SESAM) mode-locking technique was adopted, and we introduced intra-cavity BBO electro-optic crystal bidirectional voltage supplied cavity dumping technique, which effectively control the high-voltage pulse width of electro-optic crystal. Tunable high repetition rate from 500 kHz to 1 MHz was achieved. 1 064 nm in center wave length laser was obtained with pulse width of 10.4 ps and 297 nJ in single pulse energy at the repetition rate of 1 MHz. This picosecond laser system has the advantages of compact structure and high stability, providing a good source for industrial processing and regenerative amplifier.
杨超, 陈檬, 白振旭, 伊肖静, 李港. 工业加工用高重频腔倒空锁模皮秒激光器研究[J]. 应用激光, 2013, 33(2): 204. Yang Chao, Chen Meng, Bai Zhenxu, Yi Xiaojing, Li Gang. Research on Industrial Processing Used High Repetition Rate Cavity-Dumping Mode-Locked Picosecond Laser[J]. APPLIED LASER, 2013, 33(2): 204.
PDF全文
