题目：

Black Phosphorus-Polymer Composites for Pulsed Lasers

作者：

Haoran Mu¹, Shenghuang Lin¹, Zhongchi Wang², Si Xiao³, Pengfei Li¹, Yao Chen¹, Han Zhang⁴, Haifeng Bao⁵, Shu Ping Lau², Chunxu Pan¹, Dianyuan Fan⁴, Qiaoliang Bao¹*

单位：

¹Institute of Functional Nano and Soft Materials (FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou 215123 , P. R. China

²School of Physical and Technology, Wuhan University, Wuhan 430072, P. R. China

³Institute of Super-Microstructure and Ultrafast Process in Advanced Materials, School of Physics and Electronics, Hunan Key Laboratory for Super-Microstructure and Ultrafast Process, Central South University, Changsha 410083, China

⁴SZU-NUS Collaborative Innovation Centre for Optoelectronic Science & Technology, and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen, China

⁵School of Materials Science and Engineering, Wuhan Textile University, Wuhan 430200, China

摘要：

Black phosphorus is a very promising material for telecommunication due to its direct bandgap and strong resonant absorption in near-infrared wavelength range. However, ultrafast nonlinear photonic applications relying on the ultrafast photo-carrier dynamics as well as optical nonlinearity in black phosphorus remain unexplored. In this work, we investigate nonlinear optical properties of solution exfoliated BP and demonstrate the usage of BP as a new saturable absorber for high energy pulse generation in fiber laser. In order to avoid the oxidization and degradation of BP, we encapsulated BP by polymer matrix which is optically transparent in the spectrum range of interest to form a composite. Two fabrication approaches were demonstrated to produce BP-polymer composite films which were further incorporated into fiber laser cavity as nonlinear media. BP shows very fast carrier dynamics and BP-polymer composite has a modulation depth of 10.6%. A highly stable Q-switched pulse generation was achieved and the single pulse energy of ~194 nJ was demonstrated.The ease of handling of such black phosphorus-polymer composite thin films affords new opportunities for wider applications such as optical sensing, signal processing and light modulation.

影响因子：

4.062

分区情况：

2区

链接：

http://onlinelibrary.wiley.com/doi/10.1002/adom.201500336/abstract