Nonlinear graphene metamaterial

• المؤلفون الرئيسيون: Papasimakis, Nikitas, Atmatzakis, Evangelos, Luo, Zhiqiang, Shen, Zexiang, De Angelis, Francesco, Fabrizio, Enzo Di, Nikolaenko, Andrey E., Boden, Stuart A., Zheludev, Nikolay I.
• مؤلفون آخرون: School of Physical and Mathematical Sciences
• التنسيق: مقال
• اللغة: English
• منشور في: 2013
• الوصول للمادة أونلاين: https://hdl.handle.net/10356/95112; http://hdl.handle.net/10220/9161
• المؤسسة: Nanyang Technological University

We demonstrate that the broadband nonlinear optical response of graphene can be resonantly enhanced by more than an order of magnitude through hybridization with a plasmonic metamaterial, while retaining an ultrafast nonlinear response time of ∼ 1 ps. Transmission modulation close to ∼ 1% is seen at a pump fluence of ∼ 30 μJ/cm2 at the wavelength of ∼ 1.6 μm. This approach allows to engineer and enhance graphene’s nonlinearity within a broad wavelength range enabling applications in optical switching, mode-locking, and pulse shaping.