Nanotube, graphene and related 2-D layered materials: are they any good for ultrafast pulse generation?
Dr. Tawfique Hansan
Cambridge Graphene Centre, University of Cambridge, Cambridge, UK
报告时间：
2014年10月13日下午15：00
报告地点：
玉泉校区教三338
Abstract: Low-dimensional nanomaterials hold great potential for photonic applications due to their remarkable optoelectronic properties. In recent years, carbon nanotubes and graphene, 1D and 2D materials respectively, have been shown to possess a high third-order nonlinear susceptibility and ultrafast carrier dynamics. This has led to numerous nonlinear optical phenomena including saturable absorption, second and third harmonic generation, and four-wave mixing. The talk will focus on a comparison between the materials properties and how these devices are typically fabricated. Dr. Hasan will also try to explain the potential mechanisms behind saturbale absorption from an engineer’s perspective.
Biography：Dr. Tawfique Hasan is an assistant Professor (University Lecturer in UK) in Electronic Materials and Devices and Royal Academy of Engineering Research Fellow in the Nanoscience Centre and the Nanomaterials and Spectroscopy Group of the Engineering Department. He is a Title A Fellow of Churchill College, Cambridge. He gained his PhD in Electrical Engineering from the University of Cambridge. Hasan’s current research focuses on formulation of functional 1- and 2-dimensional nanomaterial inks for a wide range of printable and flexible applications including ultrafast lasers, printable and flexible (opto)electronic, sensing and energy devices such as dye sensitized solar cells, supercapacitors and batteries. Hasan has over 45 articles with ~4500 citations and an h-index of 24.
