journal article·2015-10

Black Phosphorus–Polymer Composites for Pulsed Lasers

Haoran Mu, Shenghuang Lin, Zhongchi Wang, Si Xiao, Pengfei Li, Yao Chen, Han Zhang, Haifeng Bao, Shu Ping Lau, Chunxu Pan, Dianyuan Fan, Qiaoliang Bao

Advanced Optical Materials· Volume 3· Issue 10
Publisher page

Abstract

Black phosphorus (BP) 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 photocarrier dynamics as well as optical nonlinearity in black phosphorus remain unexplored. In this work, nonlinear optical properties of solution exfoliated BP are investigated and the usage of BP as a new saturable absorber for high energy pulse generation in fiber laser is demonstrated. In order to avoid the oxidization and degradation, BP is encapsulated by polymer matrix which is optically transparent in the spectrum range of interest to form a composite. Two fabrication approaches are demonstrated to produce BP‐polymer composite films which are 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 is achieved and the single pulse energy of 194 nJ is 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.
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Research context

OpenAlex topics: Advanced Fiber Laser Technologies · Advanced Fiber Optic Sensors · Photonic Crystal and Fiber Optics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute 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 China

Department of Applied Physics The Hong Kong Polytechnic University Hung Hom Hong Kong SAR 999077 China

School of Physical and Technology Wuhan University Wuhan 430072 China

Institute 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

SZU‐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 518060 China

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

Funding

National High Technology Research and Development Program of China (863 Program) · youth 973 program · National Natural Science Foundation of China · Doctoral Fund of Ministry of Education of China · Hong Kong Scholars Program · postdoctoral early development program of Soochow University

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