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新型二硫化钼可饱和吸收体的制备及其超快特性研究

Preparation and Study on the Ultrafast Characteristics of a New Type of Molybdenum Disulfide Saturable Absorber

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摘要

以二硫化钼(MoS2)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MoS2纳米片溶液, 通过超声、离心、旋涂、干燥等工艺制作了高质量MoS2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MoS2薄膜进行了表征, 结果表明, 该MoS2薄膜为少层结构(2~3层)且具有良好的均匀性。将该MoS2 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。

Abstract

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.

Newport宣传-MKS新实验室计划
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中图分类号:TN248.1

DOI:10.3788/cjl201845.1001009

所属栏目:激光器件与激光物理

基金项目: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)

收稿日期:2018-04-28

修改稿日期:2018-06-02

网络出版日期:2018-06-14

作者单位    点击查看

杨闵皓:南京信息工程大学江苏省大气环境与装备技术协同创新中心, 江苏 南京 210044
常建华:南京信息工程大学江苏省大气环境与装备技术协同创新中心, 江苏 南京 210044南京信息工程大学江苏省气象探测与信息处理重点实验室, 江苏 南京 210044
石少杭:南京信息工程大学江苏省气象探测与信息处理重点实验室, 江苏 南京 210044
杨镇博:南京信息工程大学江苏省大气环境与装备技术协同创新中心, 江苏 南京 210044
刘振兴:南京信息工程大学江苏省大气环境与装备技术协同创新中心, 江苏 南京 210044
戴瑞:南京信息工程大学江苏省大气环境与装备技术协同创新中心, 江苏 南京 210044
丁蓉:南京信息工程大学江苏省大气环境与装备技术协同创新中心, 江苏 南京 210044
林海芝:南京信息工程大学江苏省大气环境与装备技术协同创新中心, 江苏 南京 210044

联系人作者:常建华(jianhuachang@nuist.edu.cn)

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引用该论文

Yang Minhao,Chang Jianhua,Shi Shaohang,Yang Zhenbo,Liu Zhenxing,Dai Rui,Ding Rong,Lin Haizhi. Preparation and Study on the Ultrafast Characteristics of a New Type of Molybdenum Disulfide Saturable Absorber[J]. Chinese Journal of Lasers, 2018, 45(10): 1001009

杨闵皓,常建华,石少杭,杨镇博,刘振兴,戴瑞,丁蓉,林海芝. 新型二硫化钼可饱和吸收体的制备及其超快特性研究[J]. 中国激光, 2018, 45(10): 1001009

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