摘要
采用水热法制备了石墨烯量子点(GQDs)可饱和吸收体(SA)。对GQDs SA的光学特性进行表征,估算出其调制深度为6.9%。将GQDs作为SA应用于二极管端面泵浦Nd∶YVO4激光器,实现了1063.5 nm处的被动调Q激光输出。在吸收泵浦功率为9.12 W时,输出脉冲的重复频率为1.64 MHz,脉冲宽度为200 ns,对应的脉冲能量为0.51μJ,峰值功率为2.5 W。
In this paper,graphene quantum dots(GQDs)saturable absorber(SA)was prepared by hydrothermal method.The optical properties of the GQDs SA was characterized and the modulation depth was calculated to be 6.9%.Using the GQDs SA into diode-end-pumped Nd∶YVO 4 laser,a passively Q-switched operation of 1063.5 nm laser was realized.Pulses as short as 200 ns under a repetition frequency of 1.64 MHz were generated at the absorbed pump power of 9.12 W,implying a pulse energy of 0.51μJ with the peak power of 2.5 W.
作者
丁蓉
常建华
孔春霞
石少杭
戴瑞
DING Rong;CHANG Jian-hua;KONG Chun-xia;SHI Shao-hang;DAI Rui(Collaborative Innovation Center of Atmospheric Environment and Equipment Technology,Nanjing University of Information Science&Technology,Nanjing 210044,China;Jiangsu Key Laboratory of Meteorological Observation and Information Processing,Nanjing University of Information Science&Technology,Nanjing 210044,China)
出处
《发光学报》
EI
CAS
CSCD
北大核心
2020年第1期63-70,共8页
Chinese Journal of Luminescence
基金
Supported by National Natural Science Foundation of China(61875089,11374161)
Primary Research&Development Plan of Jiangsu Province(BE2016756)
Project Funded by The Priority Academic Program Development of Jiangsu Higher Education Institutions(1081080015001)
Top-notch Academic Programs Project of Jiangsu Higher Education Institutions(1181081501003)
Postgraduate Research&Practice Innovation Program of Jiangsu Province(SJCX18_0321)~~
关键词
固体激光器
脉冲激光
石墨烯量子点
可饱和吸收体
被动调Q
solid state laser
pulse laser
graphene quantum dots
saturable absorber
passively Q-switched
