摘要
以二硫化钼(MoS_2)为代表的新型"类石墨烯"二维材料具有带隙可调、调制深度高、宽带可饱和吸收等优点,在超快脉冲激光器中获得了广泛应用。采用锂离子-插层法制备MoS_2纳米片溶液,通过超声、离心、旋涂、干燥等工艺制作了高质量MoS_2可饱和吸收体(SA)。利用拉曼光谱和原子力显微镜等方法对制备的MoS_2薄膜进行了表征,结果表明,该MoS_2薄膜为少层结构(2～3层)且具有良好的均匀性。将该MoS_2 SA置于W型全固态激光器系统中,实现了1063.9 nm稳定的被动锁模运转。实验中,当吸收抽运功率达到6.86 W时,脉冲平均输出功率为894 mW,单脉冲能量及峰值功率分别为10.28 nJ和2.056 kW,锁模脉冲宽度为5 ps。
The new type of graphene like material, represented by molybdenum disulfide （MoS2）, has many advantages of adjustable band gap, high modulation depth, and wide band saturable absorption. It is widely used in ultra-fast pulse laser. The MoS2 nanoscale solution is obtained by lithium-ion intercalation method. High quality MoS2 saturated absorber （SA） was prepared by ultrasonic, centrifugation, spin coating and drying. The MoS2 film is characterized by Raman spectroscopy and atomic force microscopy. The results showed that the film is a few-layer structure （2-3 layer） with good uniformity. The new MoS2 SA is placed in a W-type all solid state laser system, stable passive mode-locked operation at 1063.9 nm is achieved. When the pump power reached 6.86 W, the average output power of the mode-locked laser is 894 mW, the energy and peak power of monopulse are 10.28 nJ and 2. 056 kW, respectively, and the pulse width is 5 ps.
作者
杨闵皓
常建华
石少杭
杨镇博
刘振兴
戴瑞
丁蓉
林海芝
Yang Minhao;Chang Jianhua;;Shi Shaohang;Yang Zhenbo;Liu Zhenxing; Dai Rui;Ding Rong;Lin Haizhi(Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing University of Information Science ＆ Technology, Nanjing, Jiangsu 10044, China ; Jiangsu Key Laboratory of Meteorological Observation and Information Processing, Nanjing University of Information Science ＆ Technology, Nanjing, Jiangsu 10044, China)
出处
《中国激光》
EI
CAS
CSCD
北大核心
2018年第10期53-60,共8页
Chinese Journal of Lasers
基金
国家自然科学基金(11374161
61875089)
江苏省重点研发计划(BE2016756)
江苏高校优势学科Ⅱ期建设工程
江苏省高校品牌专业建设工程资助项目
国家级大学生实践创新训练计划项目(201610300030
201710300015)
江苏省大学生实践创新训练计划项目(201710300077X)
2018年江苏省研究生实践创新计划(SJCX18_0321)
关键词
激光器
固体激光器
被动锁模
二硫化钼可饱和吸收体
锂离子-插层法
lasers
solid-state laser
passively mode-locked
molybdenum disulphide saturable absorber
lithiumion intercalation
