高重复频率被动谐波锁模光纤激光器研究进展

Research progress of high repetition rate passive harmonic mode-locked fiber lasers

被动谐波锁模(HML)技术作为一种快速提高光纤激光器输出脉冲重复频率的有效方法,显著提升了光纤激光器的输出脉冲重复频率。该技术通过在激光器内部集成参数可调的可饱和吸收体,实现了高阶谐波输出,从而大幅提高了脉冲重复频率。综述了目前被动HML光纤激光器中常用的几类可饱和吸收体,详细阐述了它们的技术原理及优势,并分析了国内外该领域的最新技术进展。最后,指出了被动谐波锁模光纤激光器的未来发展趋势。

Passive harmonic mode-locking(HML)technology,as an effective method for rapidly increasing the output pulse rep-etition frequency of fiber lasers,significantly improves the output pulse repetition frequency of fiber lasers.This technology achieves high-order harmonic output by integrating parameter adjustable saturable absorbers inside the laser,thereby significantly increasing the pulse repetition frequency.This paper summarizes several commonly used types of saturable absorbers in passive HML fiber lasers,elaborates on their technical principles and advantages,and analyzes the latest technological progress in this field at home and abroad.Finally,this paper points out the future development trend of passive harmonic mode-locked fiber lasers.