摘要
将单层石墨烯覆盖在拉锥光纤上,光通过倏逝场和石墨烯相互作用实现锁模脉冲输出。当抽运功率调到阈值230mW时,可以实现自启动的锁模脉冲输出;将抽运功率固定在300mW处,调节偏振控制器可实现一个孤子束中包含2~6个脉冲的可控脉冲数输出;将抽运功率固定在450mW处,调节偏振控制器可实现不同阶次的谐波锁模,最高实现117阶谐波锁模,此时脉冲重复频率高达2.412GHz。
A section of graphene film is transferred on the tapered fiber and the light interacts with graphene by the evanescent field so as to generate the mode-locked pulse. When the pump power is transferred to the threshold of 230 roW, the self-staring mode-locked pulse can be realized. Fixing the pump power at 300 roW, soliton bundles with controlled 2-6 sub-pulses are generated by adjusting the polarization controller. Fixing the pump power at 450 roW, different order harmonic mode-locked pulses can be achieved by adjusting the polarization controller. The highest order of harmonic mode-locked pulse is 117, and the corresponding pulse repetition frequency is 2. 412 GHz.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2017年第8期77-81,共5页
Chinese Journal of Lasers
基金
国家自然科学基金(11674177)
天津市自然科学基金(16JCZDJC31000)
关键词
激光器
孤子束
谐波锁模
被动锁模
石墨烯
lasers
soliton bundles
harmonic mode-locked
passive mode-locked
graphene
